diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0023a53
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+.DS_Store
+/.build
+/Packages
+xcuserdata/
+DerivedData/
+.swiftpm/configuration/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc
diff --git a/.swiftpm/xcode/package.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/.swiftpm/xcode/package.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/.swiftpm/xcode/package.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
diff --git a/Package.swift b/Package.swift
new file mode 100644
index 0000000..3207fe1
--- /dev/null
+++ b/Package.swift
@@ -0,0 +1,24 @@
+// swift-tools-version: 5.9
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "ProgrammaticCoreData",
+    platforms: [
+        .macOS(.v14),
+        .iOS(.v17)
+    ],
+    products: [
+        .library(
+            name: "ProgrammaticCoreData",
+            targets: ["ProgrammaticCoreData"]),
+    ],
+    targets: [
+        .target(
+            name: "ProgrammaticCoreData"),
+        .testTarget(
+            name: "ProgrammaticCoreDataTests",
+            dependencies: ["ProgrammaticCoreData"]),
+    ]
+)
diff --git a/Sources/ProgrammaticCoreData/CoreDataCreationError.swift b/Sources/ProgrammaticCoreData/CoreDataCreationError.swift
new file mode 100644
index 0000000..10c32a9
--- /dev/null
+++ b/Sources/ProgrammaticCoreData/CoreDataCreationError.swift
@@ -0,0 +1,8 @@
+//  Created by Axel Ancona Esselmann on 2/24/24.
+//
+
+import Foundation
+
+public enum CoreDataCreationError: Error {
+    case storeDescriptionMissing
+}
diff --git a/Sources/ProgrammaticCoreData/EntityDescriptionAttribute.swift b/Sources/ProgrammaticCoreData/EntityDescriptionAttribute.swift
new file mode 100644
index 0000000..5ed1c55
--- /dev/null
+++ b/Sources/ProgrammaticCoreData/EntityDescriptionAttribute.swift
@@ -0,0 +1,91 @@
+//  Created by Axel Ancona Esselmann on 2/24/24.
+//
+
+import CoreData
+
+public enum EntityDescriptionAttribute<CoreDataEntity, T> {
+    case undefined(KeyPath<CoreDataEntity, T>)
+    case integer16(KeyPath<CoreDataEntity, T>)
+    case integer32(KeyPath<CoreDataEntity, T>)
+    case integer64(KeyPath<CoreDataEntity, T>)
+    case decimal(KeyPath<CoreDataEntity, T>)
+    case double(KeyPath<CoreDataEntity, T>)
+    case float(KeyPath<CoreDataEntity, T>)
+    case string(KeyPath<CoreDataEntity, T>)
+    case boolean(KeyPath<CoreDataEntity, T>)
+    case date(KeyPath<CoreDataEntity, T>)
+    case binaryData(KeyPath<CoreDataEntity, T>)
+    case uuid(KeyPath<CoreDataEntity, T>)
+    case uri(KeyPath<CoreDataEntity, T>)
+    case transformable(KeyPath<CoreDataEntity, T>)
+    case objectID(KeyPath<CoreDataEntity, T>)
+    case composite(KeyPath<CoreDataEntity, T>)
+
+    public var attributeType: NSAttributeType {
+        switch self {
+        case .undefined:
+            return .undefinedAttributeType
+        case .integer16:
+            return .integer16AttributeType
+        case .integer32:
+            return .integer32AttributeType
+        case .integer64:
+            return .integer64AttributeType
+        case .decimal:
+            return .decimalAttributeType
+        case .double:
+            return .doubleAttributeType
+        case .float:
+            return .floatAttributeType
+        case .string:
+            return .stringAttributeType
+        case .boolean:
+            return .booleanAttributeType
+        case .date:
+            return .dateAttributeType
+        case .binaryData:
+            return .binaryDataAttributeType
+        case .uuid:
+            return .UUIDAttributeType
+        case .uri:
+            return .URIAttributeType
+        case .transformable:
+            return .transformableAttributeType
+        case .objectID:
+            return .objectIDAttributeType
+        case .composite:
+            return .compositeAttributeType
+        }
+    }
+
+    public var keyPath: KeyPath<CoreDataEntity, T> {
+        switch self {
+        case
+            .undefined(let keyPath),
+            .integer16(let keyPath),
+            .integer32(let keyPath),
+            .integer64(let keyPath),
+            .decimal(let keyPath),
+            .double(let keyPath),
+            .float(let keyPath),
+            .string(let keyPath),
+            .boolean(let keyPath),
+            .date(let keyPath),
+            .binaryData(let keyPath),
+            .uuid(let keyPath),
+            .uri(let keyPath),
+            .transformable(let keyPath),
+            .objectID(let keyPath),
+            .composite(let keyPath):
+            return keyPath
+        }
+    }
+
+    public var nsAttributeType: NSAttributeDescription {
+        NSAttributeDescription(
+            name: NSExpression(forKeyPath: keyPath).keyPath,
+            type: attributeType,
+            defaultValue: nil
+        )
+    }
+}
diff --git a/Sources/ProgrammaticCoreData/NSAttributeDescription+Extensions.swift b/Sources/ProgrammaticCoreData/NSAttributeDescription+Extensions.swift
new file mode 100644
index 0000000..aa45166
--- /dev/null
+++ b/Sources/ProgrammaticCoreData/NSAttributeDescription+Extensions.swift
@@ -0,0 +1,13 @@
+//  Created by Axel Ancona Esselmann on 2/24/24.
+//
+
+import CoreData
+
+public extension NSAttributeDescription {
+    convenience init(name: String, type: NSAttributeType, defaultValue: Any? = nil) {
+        self.init()
+        self.name = name
+        self.attributeType = type
+        self.defaultValue = defaultValue
+    }
+}
diff --git a/Sources/ProgrammaticCoreData/NSEntityDescription+Extensions.swift b/Sources/ProgrammaticCoreData/NSEntityDescription+Extensions.swift
new file mode 100644
index 0000000..10abcea
--- /dev/null
+++ b/Sources/ProgrammaticCoreData/NSEntityDescription+Extensions.swift
@@ -0,0 +1,999 @@
+//  Created by Axel Ancona Esselmann on 2/24/24.
+//
+
+import CoreData
+
+public extension NSEntityDescription {
+
+    convenience init<EntityType>(_ type: EntityType.Type)
+        where EntityType: AnyObject
+    {
+        self.init()
+        let name = NSStringFromClass(type)
+        self.name = name
+        self.managedObjectClassName = name
+    }
+
+    convenience init<EntityType, A0>(
+        _ type: EntityType.Type,
+        properties
+            a0: EntityDescriptionAttribute<EntityType, A0>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(type, properties: [a0.nsAttributeType])
+    }
+
+    convenience init<EntityType, A0, A1>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>,
+        _ a15: EntityDescriptionAttribute<EntityType, A15>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType,
+                a15.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>,
+        _ a15: EntityDescriptionAttribute<EntityType, A15>,
+        _ a16: EntityDescriptionAttribute<EntityType, A16>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType,
+                a15.nsAttributeType,
+                a16.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>,
+        _ a15: EntityDescriptionAttribute<EntityType, A15>,
+        _ a16: EntityDescriptionAttribute<EntityType, A16>,
+        _ a17: EntityDescriptionAttribute<EntityType, A17>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType,
+                a15.nsAttributeType,
+                a16.nsAttributeType,
+                a17.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>,
+        _ a15: EntityDescriptionAttribute<EntityType, A15>,
+        _ a16: EntityDescriptionAttribute<EntityType, A16>,
+        _ a17: EntityDescriptionAttribute<EntityType, A17>,
+        _ a18: EntityDescriptionAttribute<EntityType, A18>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType,
+                a15.nsAttributeType,
+                a16.nsAttributeType,
+                a17.nsAttributeType,
+                a18.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>,
+        _ a15: EntityDescriptionAttribute<EntityType, A15>,
+        _ a16: EntityDescriptionAttribute<EntityType, A16>,
+        _ a17: EntityDescriptionAttribute<EntityType, A17>,
+        _ a18: EntityDescriptionAttribute<EntityType, A18>,
+        _ a19: EntityDescriptionAttribute<EntityType, A19>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType,
+                a15.nsAttributeType,
+                a16.nsAttributeType,
+                a17.nsAttributeType,
+                a18.nsAttributeType,
+                a19.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>,
+        _ a15: EntityDescriptionAttribute<EntityType, A15>,
+        _ a16: EntityDescriptionAttribute<EntityType, A16>,
+        _ a17: EntityDescriptionAttribute<EntityType, A17>,
+        _ a18: EntityDescriptionAttribute<EntityType, A18>,
+        _ a19: EntityDescriptionAttribute<EntityType, A19>,
+        _ a20: EntityDescriptionAttribute<EntityType, A20>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType,
+                a15.nsAttributeType,
+                a16.nsAttributeType,
+                a17.nsAttributeType,
+                a18.nsAttributeType,
+                a19.nsAttributeType,
+                a20.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>,
+        _ a15: EntityDescriptionAttribute<EntityType, A15>,
+        _ a16: EntityDescriptionAttribute<EntityType, A16>,
+        _ a17: EntityDescriptionAttribute<EntityType, A17>,
+        _ a18: EntityDescriptionAttribute<EntityType, A18>,
+        _ a19: EntityDescriptionAttribute<EntityType, A19>,
+        _ a20: EntityDescriptionAttribute<EntityType, A20>,
+        _ a21: EntityDescriptionAttribute<EntityType, A21>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType,
+                a15.nsAttributeType,
+                a16.nsAttributeType,
+                a17.nsAttributeType,
+                a18.nsAttributeType,
+                a19.nsAttributeType,
+                a20.nsAttributeType,
+                a21.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>,
+        _ a15: EntityDescriptionAttribute<EntityType, A15>,
+        _ a16: EntityDescriptionAttribute<EntityType, A16>,
+        _ a17: EntityDescriptionAttribute<EntityType, A17>,
+        _ a18: EntityDescriptionAttribute<EntityType, A18>,
+        _ a19: EntityDescriptionAttribute<EntityType, A19>,
+        _ a20: EntityDescriptionAttribute<EntityType, A20>,
+        _ a21: EntityDescriptionAttribute<EntityType, A21>,
+        _ a22: EntityDescriptionAttribute<EntityType, A22>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType,
+                a15.nsAttributeType,
+                a16.nsAttributeType,
+                a17.nsAttributeType,
+                a18.nsAttributeType,
+                a19.nsAttributeType,
+                a20.nsAttributeType,
+                a21.nsAttributeType,
+                a22.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>,
+        _ a15: EntityDescriptionAttribute<EntityType, A15>,
+        _ a16: EntityDescriptionAttribute<EntityType, A16>,
+        _ a17: EntityDescriptionAttribute<EntityType, A17>,
+        _ a18: EntityDescriptionAttribute<EntityType, A18>,
+        _ a19: EntityDescriptionAttribute<EntityType, A19>,
+        _ a20: EntityDescriptionAttribute<EntityType, A20>,
+        _ a21: EntityDescriptionAttribute<EntityType, A21>,
+        _ a22: EntityDescriptionAttribute<EntityType, A22>,
+        _ a23: EntityDescriptionAttribute<EntityType, A23>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType,
+                a15.nsAttributeType,
+                a16.nsAttributeType,
+                a17.nsAttributeType,
+                a18.nsAttributeType,
+                a19.nsAttributeType,
+                a20.nsAttributeType,
+                a21.nsAttributeType,
+                a22.nsAttributeType,
+                a23.nsAttributeType
+            ]
+        )
+    }
+
+    convenience init<EntityType, A0, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12, A13, A14, A15, A16, A17, A18, A19, A20, A21, A22, A23, A24>(
+        _ type: EntityType.Type,
+        properties
+          a0: EntityDescriptionAttribute<EntityType, A0>,
+        _ a1: EntityDescriptionAttribute<EntityType, A1>,
+        _ a2: EntityDescriptionAttribute<EntityType, A2>,
+        _ a3: EntityDescriptionAttribute<EntityType, A3>,
+        _ a4: EntityDescriptionAttribute<EntityType, A4>,
+        _ a5: EntityDescriptionAttribute<EntityType, A5>,
+        _ a6: EntityDescriptionAttribute<EntityType, A6>,
+        _ a7: EntityDescriptionAttribute<EntityType, A7>,
+        _ a8: EntityDescriptionAttribute<EntityType, A8>,
+        _ a9: EntityDescriptionAttribute<EntityType, A9>,
+        _ a10: EntityDescriptionAttribute<EntityType, A10>,
+        _ a11: EntityDescriptionAttribute<EntityType, A11>,
+        _ a12: EntityDescriptionAttribute<EntityType, A12>,
+        _ a13: EntityDescriptionAttribute<EntityType, A13>,
+        _ a14: EntityDescriptionAttribute<EntityType, A14>,
+        _ a15: EntityDescriptionAttribute<EntityType, A15>,
+        _ a16: EntityDescriptionAttribute<EntityType, A16>,
+        _ a17: EntityDescriptionAttribute<EntityType, A17>,
+        _ a18: EntityDescriptionAttribute<EntityType, A18>,
+        _ a19: EntityDescriptionAttribute<EntityType, A19>,
+        _ a20: EntityDescriptionAttribute<EntityType, A20>,
+        _ a21: EntityDescriptionAttribute<EntityType, A21>,
+        _ a22: EntityDescriptionAttribute<EntityType, A22>,
+        _ a23: EntityDescriptionAttribute<EntityType, A23>,
+        _ a24: EntityDescriptionAttribute<EntityType, A24>
+    )
+        where EntityType: AnyObject
+    {
+        self.init(
+            type,
+            properties: [
+                a0.nsAttributeType,
+                a1.nsAttributeType,
+                a2.nsAttributeType,
+                a3.nsAttributeType,
+                a4.nsAttributeType,
+                a5.nsAttributeType,
+                a6.nsAttributeType,
+                a7.nsAttributeType,
+                a8.nsAttributeType,
+                a9.nsAttributeType,
+                a10.nsAttributeType,
+                a11.nsAttributeType,
+                a12.nsAttributeType,
+                a13.nsAttributeType,
+                a14.nsAttributeType,
+                a15.nsAttributeType,
+                a16.nsAttributeType,
+                a17.nsAttributeType,
+                a18.nsAttributeType,
+                a19.nsAttributeType,
+                a20.nsAttributeType,
+                a21.nsAttributeType,
+                a22.nsAttributeType,
+                a23.nsAttributeType,
+                a24.nsAttributeType
+            ]
+        )
+    }
+
+    private convenience init<EntityType>(
+        _ type: EntityType.Type,
+        properties : [NSAttributeDescription]
+    )
+        where EntityType: AnyObject
+    {
+        self.init()
+        let name = NSStringFromClass(type)
+        self.name = name
+        self.managedObjectClassName = name
+        self.properties = properties
+    }
+}
diff --git a/Sources/ProgrammaticCoreData/NSManagedObjectModel+Extensions.swift b/Sources/ProgrammaticCoreData/NSManagedObjectModel+Extensions.swift
new file mode 100644
index 0000000..31346ad
--- /dev/null
+++ b/Sources/ProgrammaticCoreData/NSManagedObjectModel+Extensions.swift
@@ -0,0 +1,54 @@
+//  Created by Axel Ancona Esselmann on 2/24/24.
+//
+
+import CoreData
+
+public extension NSManagedObjectModel {
+
+    convenience init(_ entities: [any SelfDescribingCoreDataEntity.Type]) {
+        self.init()
+        self.entities = entities.map { $0.entityDescription }
+    }
+
+    convenience init(_ entities: any SelfDescribingCoreDataEntity.Type...) {
+        self.init(entities)
+    }
+
+    @discardableResult
+    func append(_ entities: [NSEntityDescription]) -> Self {
+        self.entities += entities
+        return self
+    }
+
+    func createContainer(
+        name: String,
+        location: NSPersistentContainer.Location
+    ) async throws -> NSPersistentContainer {
+        try await NSPersistentContainer.create(
+            name: name,
+            model: self,
+            location: location
+        )
+    }
+
+    func createCloudContainer(
+        name: String,
+        cloudContainerIdentifier: String,
+        options: CloudOptions
+    ) throws -> NSPersistentContainer {
+        try NSPersistentCloudKitContainer(
+            name: name,
+            managedObjectModel: self,
+            cloudContainerIdentifier: cloudContainerIdentifier,
+            options: options
+        )
+    }
+
+    func createLocalContainer(name: String, path: URL) -> NSPersistentContainer {
+        NSPersistentContainer(name: name, managedObjectModel: self, path: path)
+    }
+
+    func createLocalContainer(name: String, subdirectory: String?) throws -> NSPersistentContainer {
+        try NSPersistentContainer(name: name, managedObjectModel: self, subdirecotry: subdirectory)
+    }
+}
diff --git a/Sources/ProgrammaticCoreData/NSPersistentCloudKitContainer+Extensions.swift b/Sources/ProgrammaticCoreData/NSPersistentCloudKitContainer+Extensions.swift
new file mode 100644
index 0000000..685ec86
--- /dev/null
+++ b/Sources/ProgrammaticCoreData/NSPersistentCloudKitContainer+Extensions.swift
@@ -0,0 +1,128 @@
+//  Created by Axel Ancona Esselmann on 2/24/24.
+//
+
+import CoreData
+
+public extension NSPersistentCloudKitContainer {
+    convenience init(
+        name: String,
+        managedObjectModel: NSManagedObjectModel,
+        cloudContainerIdentifier: String,
+        options: CloudOptions? = nil
+    ) throws {
+        self.init(name: name, managedObjectModel: managedObjectModel)
+        guard let description = persistentStoreDescriptions.first else {
+            throw CoreDataCreationError.storeDescriptionMissing
+        }
+        if let options {
+            if let enablingPersistentHistoryTracking = options.enablingPersistentHistoryTracking {
+                let nsNumber = enablingPersistentHistoryTracking as NSNumber
+                description.setOption(nsNumber, forKey: NSPersistentHistoryTrackingKey)
+                description.setOption(nsNumber, forKey: NSPersistentStoreRemoteChangeNotificationPostOptionKey)
+            }
+        }
+        let options = NSPersistentCloudKitContainerOptions(containerIdentifier: cloudContainerIdentifier)
+        description.cloudKitContainerOptions = options
+        persistentStoreDescriptions = [ description ]
+    }
+}
+
+import Combine
+
+@globalActor
+public actor RemoteChangeManager {
+
+    static public var shared = RemoteChangeManager()
+
+    enum Error: Swift.Error {
+        case notInitialized
+        case invalidHistoryResults
+    }
+
+    @RemoteChangeManager
+    var bag = Set<AnyCancellable>()
+
+    init() { }
+
+    @RemoteChangeManager
+    public func initialize(container: NSPersistentContainer) {
+        NotificationCenter.default.publisher(
+            for: .NSPersistentStoreRemoteChange,
+            object: container.persistentStoreCoordinator
+        )
+        .sink { _ in
+            Task { [weak self] in
+                do {
+                    try self?.processRemoteChange()
+                } catch {
+                    print(error)
+                }
+            }
+        }
+        .store(in: &bag)
+        _backgroundContext = container.newBackgroundContext()
+    }
+
+    @RemoteChangeManager
+    private var _backgroundContext: NSManagedObjectContext?
+
+    @RemoteChangeManager
+    private func backgroundContext() throws -> NSManagedObjectContext {
+        guard let context = _backgroundContext else {
+            throw Error.notInitialized
+        }
+        return context
+    }
+
+    @RemoteChangeManager
+    private func processRemoteChange() throws {
+        let history = try fetchHistory()
+        guard !history.isEmpty else {
+            return
+        }
+        print("processRemoteChange - History: ", history.count)
+        try merge(history)
+        try clean()
+        print("done")
+        // 59557 values
+    }
+
+    @RemoteChangeManager
+    func fetchHistory() throws -> [NSPersistentHistoryTransaction] {
+        let context = try backgroundContext()
+        let fromDate = Date.distantPast
+        let historyFetchRequest = NSPersistentHistoryChangeRequest
+            .fetchHistory(after: fromDate)
+        if let fetchRequest = NSPersistentHistoryTransaction.fetchRequest {
+            historyFetchRequest.fetchRequest = fetchRequest
+        }
+        guard
+            let historyResult = try context.execute(historyFetchRequest) as? NSPersistentHistoryResult,
+            let history = historyResult.result as? [NSPersistentHistoryTransaction]
+        else {
+            throw Error.invalidHistoryResults
+        }
+        return history
+    }
+
+    @RemoteChangeManager
+    func merge(_ transactions: [NSPersistentHistoryTransaction]) throws {
+        let context = try backgroundContext()
+        context.perform {
+            for transaction in transactions {
+                context.mergeChanges(fromContextDidSave: transaction.objectIDNotification())
+            }
+        }
+    }
+
+    @RemoteChangeManager
+    func clean() throws {
+        let context = try backgroundContext()
+//        let sevenDaysAgo = Date.now
+        let sevenDaysAgo = Date.now.addingTimeInterval(-604_800)
+        let purgeHistoryRequest =
+            NSPersistentHistoryChangeRequest.deleteHistory(
+                before: sevenDaysAgo)
+        try context.execute(purgeHistoryRequest)
+    }
+}
diff --git a/Sources/ProgrammaticCoreData/NSPersistentContainer+Extensions.swift b/Sources/ProgrammaticCoreData/NSPersistentContainer+Extensions.swift
new file mode 100644
index 0000000..aa994d8
--- /dev/null
+++ b/Sources/ProgrammaticCoreData/NSPersistentContainer+Extensions.swift
@@ -0,0 +1,77 @@
+//  Created by Axel Ancona Esselmann on 2/24/24.
+//
+
+import CoreData
+
+public struct CloudOptions {
+    public var enablingPersistentHistoryTracking: Bool? = nil
+
+    public init(enablingPersistentHistoryTracking: Bool? = true) {
+        self.enablingPersistentHistoryTracking = enablingPersistentHistoryTracking
+    }
+}
+
+public extension NSPersistentContainer {
+
+    enum Location {
+        public static func cloud(cloudContainerIdentifier: String) -> Self {
+            return .cloud(cloudContainerIdentifier: cloudContainerIdentifier, options: CloudOptions())
+        }
+
+        case cloud(cloudContainerIdentifier: String, options: CloudOptions)
+        case local(subdirecotry: String?)
+
+        var isCloud: Bool {
+            switch self {
+            case .cloud:
+                return true
+            case .local:
+                return false
+            }
+        }
+    }
+
+    convenience init(name: String, managedObjectModel: NSManagedObjectModel, path: URL) {
+        self.init(name: name, managedObjectModel: managedObjectModel)
+        persistentStoreDescriptions[0] = NSPersistentStoreDescription(url: path)
+    }
+
+
+    convenience init(name: String, managedObjectModel: NSManagedObjectModel, subdirecotry: String?) throws {
+        self.init(name: name, managedObjectModel: managedObjectModel)
+        let path = try URL.libraryDbPath(modelName: name, subdirectory: subdirecotry)
+        persistentStoreDescriptions[0] = NSPersistentStoreDescription(url: path)
+    }
+
+    func loadPersistentStores() async throws {
+        try await withCheckedThrowingContinuation { [unowned self] (continuation: CheckedContinuation<Void, Swift.Error>) in
+            self.loadPersistentStores(completionHandler: { (storeDescription, error) in
+                if let error = error {
+                    continuation.resume(throwing: error)
+                } else {
+                    continuation.resume()
+                }
+            })
+        }
+    }
+
+    static func create(
+        name: String,
+        model: NSManagedObjectModel,
+        location: Location
+    ) async throws -> NSPersistentContainer {
+        let container: NSPersistentContainer
+        switch location {
+        case .cloud(let cloudContainerIdentifier, let options):
+            container = try model.createCloudContainer(
+                name: name,
+                cloudContainerIdentifier: cloudContainerIdentifier,
+                options: options
+            )
+        case .local(let subdirectory):
+            container = try model.createLocalContainer(name: name, subdirectory: subdirectory)
+        }
+        try await container.loadPersistentStores()
+        return container
+    }
+}
diff --git a/Sources/ProgrammaticCoreData/SelfDescribingCoreDataEntity.swift b/Sources/ProgrammaticCoreData/SelfDescribingCoreDataEntity.swift
new file mode 100644
index 0000000..894a4dc
--- /dev/null
+++ b/Sources/ProgrammaticCoreData/SelfDescribingCoreDataEntity.swift
@@ -0,0 +1,8 @@
+//  Created by Axel Ancona Esselmann on 2/25/24.
+//
+
+import CoreData
+
+public protocol SelfDescribingCoreDataEntity {
+    static var entityDescription: NSEntityDescription { get }
+}
diff --git a/Sources/ProgrammaticCoreData/URL+Extensions_.swift b/Sources/ProgrammaticCoreData/URL+Extensions_.swift
new file mode 100644
index 0000000..41bb89e
--- /dev/null
+++ b/Sources/ProgrammaticCoreData/URL+Extensions_.swift
@@ -0,0 +1,35 @@
+//  Created by Axel Ancona Esselmann on 2/24/24.
+//
+
+import Foundation
+
+public extension URL {
+    static func libraryDbPath(modelName: String, subdirectory: String?) throws -> URL {
+        let fileManager = FileManager.default
+
+        let appName = Bundle.main.bundleIdentifier?.components(separatedBy: ".").last ?? ""
+        var dbDir = try fileManager.url(
+            for: .libraryDirectory,
+            in: .userDomainMask,
+            appropriateFor: nil,
+            create: false
+        )
+        .appendingPathComponent(appName)
+        .appendingPathComponent("db")
+        if let subdirectory = subdirectory {
+            dbDir = dbDir.appendingPathComponent(subdirectory)
+        }
+        dbDir = dbDir.appendingPathComponent(modelName)
+
+        if !fileManager.fileExists(atPath: dbDir.relativePath) {
+            try fileManager.createDirectory(
+                at: dbDir,
+                withIntermediateDirectories: true,
+                attributes: nil
+            )
+        }
+
+        return dbDir
+            .appendingPathComponent(modelName + ".sqlite")
+    }
+}
diff --git a/Tests/ProgrammaticCoreDataTests/ProgrammaticCoreDataTests.swift b/Tests/ProgrammaticCoreDataTests/ProgrammaticCoreDataTests.swift
new file mode 100644
index 0000000..66d3a63
--- /dev/null
+++ b/Tests/ProgrammaticCoreDataTests/ProgrammaticCoreDataTests.swift
@@ -0,0 +1,12 @@
+import XCTest
+@testable import ProgrammaticCoreData
+
+final class ProgrammaticCoreDataTests: XCTestCase {
+    func testExample() throws {
+        // XCTest Documentation
+        // https://developer.apple.com/documentation/xctest
+
+        // Defining Test Cases and Test Methods
+        // https://developer.apple.com/documentation/xctest/defining_test_cases_and_test_methods
+    }
+}