diff --git a/README.md b/README.md
index dc6d997..412481c 100644
--- a/README.md
+++ b/README.md
@@ -299,7 +299,7 @@ In this case, we remove the previous object and stop if the new one is null.
 Otherwise, we create the corresponding section and save the desired into it:
 ```java
     @Override
-    protected TriConsumer<@NotNull IConfiguration, @NotNull String, @NotNull Person> getDumper() {
+    protected TriConsumer<IConfiguration, String, Person> getDumper() {
         return (configuration, path, person) -> {
             if (configuration == null || path == null) return;
             if (person == null) return;
@@ -315,7 +315,7 @@ Otherwise, load the name and the age and create a new person with these values (
 **It is up to the user to handle any exception accordingly**, for example if age was null):
 ```java
     @Override
-    protected BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable Person> getLoader() {
+    protected BiFunctionException<IConfiguration, String, Person> getLoader() {
         return (configuration, path) -> {
             if (configuration == null || path == null) return null;
             ConfigurationSection personSection = configuration.getConfigurationSection(path);
diff --git a/build.gradle b/build.gradle
index e0cdd1d..5c6519e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -6,7 +6,7 @@ plugins {
 }
 
 group = 'it.fulminazzo'
-version = '1.5.12'
+version = '1.5.13'
 
 repositories {
     mavenCentral()
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/ArrayYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/ArrayYAMLParser.java
index 674663c..09e917f 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/ArrayYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/ArrayYAMLParser.java
@@ -5,7 +5,6 @@
 import it.fulminazzo.fulmicollection.interfaces.functions.BiFunctionException;
 import it.fulminazzo.fulmicollection.interfaces.functions.TriConsumer;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import java.lang.reflect.Array;
 import java.util.Arrays;
@@ -35,7 +34,7 @@ public ArrayYAMLParser() {
      * @return the loader
      */
     @Override
-    protected @NotNull BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable T[]> getLoader() {
+    protected @NotNull BiFunctionException<IConfiguration, String, T[]> getLoader() {
         return (c, s) -> {
             List<T> tmp = listYamlParser.load(c, s);
             if (tmp == null) return null;
@@ -53,7 +52,7 @@ public ArrayYAMLParser() {
      * @return the dumper
      */
     @Override
-    protected @NotNull TriConsumer<@NotNull IConfiguration, @NotNull String, @NotNull T[]> getDumper() {
+    protected @NotNull TriConsumer<IConfiguration, String, T[]> getDumper() {
         return (c, s, o) -> {
             assert o != null;
             listYamlParser.dump(c, s, Arrays.asList(o));
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/CallableYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/CallableYAMLParser.java
index ec1458a..558f3b4 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/CallableYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/CallableYAMLParser.java
@@ -9,7 +9,6 @@
 import it.fulminazzo.yamlparser.configuration.ConfigurationSection;
 import it.fulminazzo.yamlparser.utils.FileUtils;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
@@ -34,7 +33,7 @@ public CallableYAMLParser(@NotNull Class<T> tClass, FunctionException<Configurat
     }
 
     @Override
-    protected @NotNull BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable T> getLoader() {
+    protected @NotNull BiFunctionException<IConfiguration, String, T> getLoader() {
         return (c, s) -> {
             ConfigurationSection section = c.getConfigurationSection(s);
             if (section == null) return null;
@@ -52,7 +51,7 @@ public CallableYAMLParser(@NotNull Class<T> tClass, FunctionException<Configurat
     }
 
     @Override
-    protected @NotNull TriConsumer<@NotNull IConfiguration, @NotNull String, @Nullable T> getDumper() {
+    protected @NotNull TriConsumer<IConfiguration, String, T> getDumper() {
         return (c, s, t) -> {
             c.set(s, null);
             if (t == null) return;
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/CollectionYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/CollectionYAMLParser.java
index b0a4ee0..f20fadd 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/CollectionYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/CollectionYAMLParser.java
@@ -29,7 +29,7 @@ public CollectionYAMLParser(@NotNull Class<C> aClass) {
     }
 
     @Override
-    protected @NotNull BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable C> getLoader() {
+    protected @NotNull BiFunctionException<IConfiguration, String, C> getLoader() {
         return (c, s) -> {
             if (c.isConfigurationSection(s)) {
                 @Nullable Map<Integer, T> map = mapYamlParser.load(c, s);
@@ -47,7 +47,7 @@ public CollectionYAMLParser(@NotNull Class<C> aClass) {
     }
 
     @Override
-    protected @NotNull TriConsumer<@NotNull IConfiguration, @NotNull String, @Nullable C> getDumper() {
+    protected @NotNull TriConsumer<IConfiguration, String, C> getDumper() {
         return (c, s, o) -> {
             c.set(s, null);
             if (o == null) return;
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/DateYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/DateYAMLParser.java
index f9f8295..8161f76 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/DateYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/DateYAMLParser.java
@@ -4,7 +4,6 @@
 import it.fulminazzo.fulmicollection.interfaces.functions.BiFunctionException;
 import it.fulminazzo.fulmicollection.interfaces.functions.TriConsumer;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import java.util.Date;
 
@@ -26,7 +25,7 @@ public DateYAMLParser() {
      * @return the loader
      */
     @Override
-    protected @NotNull BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable Date> getLoader() {
+    protected @NotNull BiFunctionException<IConfiguration, String, Date> getLoader() {
         return (c, s) -> {
             Long l = c.getLong(s);
             return l == null ? null : new Date(l);
@@ -39,7 +38,7 @@ public DateYAMLParser() {
      * @return the dumper
      */
     @Override
-    protected @NotNull TriConsumer<@NotNull IConfiguration, @NotNull String, @Nullable Date> getDumper() {
+    protected @NotNull TriConsumer<IConfiguration, String, Date> getDumper() {
         return (c, s, d) -> c.set(s, d == null ? null : d.getTime());
     }
 }
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/EnumYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/EnumYAMLParser.java
index 46bf91d..12f4069 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/EnumYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/EnumYAMLParser.java
@@ -4,7 +4,6 @@
 import it.fulminazzo.fulmicollection.interfaces.functions.TriConsumer;
 import it.fulminazzo.yamlparser.configuration.IConfiguration;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 /**
  * Enum YAML parser.
@@ -24,7 +23,7 @@ public EnumYAMLParser(@NotNull Class<?> eClass) {
     }
 
     @Override
-    protected @NotNull BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable E> getLoader() {
+    protected @NotNull BiFunctionException<IConfiguration, String, E> getLoader() {
         return (c, s) -> {
             String enumString = c.getString(s);
             return E.valueOf(getOClass(), enumString);
@@ -32,7 +31,7 @@ public EnumYAMLParser(@NotNull Class<?> eClass) {
     }
 
     @Override
-    protected @NotNull TriConsumer<@NotNull IConfiguration, @NotNull String, @Nullable E> getDumper() {
+    protected @NotNull TriConsumer<IConfiguration, String, E> getDumper() {
         return (c, s, e) -> c.set(s, e == null ? null : e.name());
     }
 }
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/ListYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/ListYAMLParser.java
index 04f5620..51afd0d 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/ListYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/ListYAMLParser.java
@@ -4,7 +4,6 @@
 import it.fulminazzo.yamlparser.configuration.IConfiguration;
 import it.fulminazzo.fulmicollection.interfaces.functions.BiFunctionException;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import java.util.ArrayList;
 import java.util.Collection;
@@ -32,7 +31,7 @@ public ListYAMLParser() {
      * @return the loader
      */
     @Override
-    protected @NotNull BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable List<T>> getLoader() {
+    protected @NotNull BiFunctionException<IConfiguration, String, List<T>> getLoader() {
         return (c, s) -> {
             Collection<T> loaded = super.getLoader().apply(c, s);
             return loaded == null ? null : new ArrayList<>(loaded);
@@ -40,7 +39,7 @@ public ListYAMLParser() {
     }
 
     @Override
-    protected @NotNull TriConsumer<@NotNull IConfiguration, @NotNull String, @Nullable List<T>> getDumper() {
+    protected @NotNull TriConsumer<IConfiguration, String, List<T>> getDumper() {
         return (c, s, o) -> {
             if (o != null && !o.isEmpty()) {
                 Object firstNonNull = o.stream().filter(Objects::nonNull).findFirst().orElse(null);
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/MapYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/MapYAMLParser.java
index bb711d3..2599fb5 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/MapYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/MapYAMLParser.java
@@ -7,7 +7,6 @@
 import it.fulminazzo.yamlparser.configuration.ConfigurationSection;
 import it.fulminazzo.yamlparser.configuration.IConfiguration;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -51,7 +50,7 @@ public MapYAMLParser(Function<String, K> keyLoader, Function<K, String> keyParse
      * @return the loader
      */
     @Override
-    protected @NotNull BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable Map<K, V>> getLoader() {
+    protected @NotNull BiFunctionException<IConfiguration, String, Map<K, V>> getLoader() {
         return (c, s) -> {
             ConfigurationSection section = c.getConfigurationSection(s);
             Class<V> oClass = null;
@@ -73,7 +72,7 @@ public MapYAMLParser(Function<String, K> keyLoader, Function<K, String> keyParse
      * @return the dumper
      */
     @Override
-    protected @NotNull TriConsumer<@NotNull IConfiguration, @NotNull String, @NotNull Map<K, V>> getDumper() {
+    protected @NotNull TriConsumer<IConfiguration, String, Map<K, V>> getDumper() {
         return (c, s, m) -> {
             ConfigurationSection section = c.createSection(s);
             m.forEach((k, v) -> section.set(keyParser.apply(k), v));
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/SerializableYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/SerializableYAMLParser.java
index a3873d5..e1d5b62 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/SerializableYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/SerializableYAMLParser.java
@@ -5,7 +5,6 @@
 import it.fulminazzo.fulmicollection.interfaces.functions.BiFunctionException;
 import it.fulminazzo.fulmicollection.interfaces.functions.TriConsumer;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import java.io.Serializable;
 
@@ -27,7 +26,7 @@ public SerializableYAMLParser() {
      * @return the loader
      */
     @Override
-    protected @NotNull BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable Serializable> getLoader() {
+    protected @NotNull BiFunctionException<IConfiguration, String, Serializable> getLoader() {
         return (c, s) -> {
             try {
                 String string = (String) c.getObject(s);
@@ -44,7 +43,7 @@ public SerializableYAMLParser() {
      * @return the dumper
      */
     @Override
-    protected @NotNull TriConsumer<@NotNull IConfiguration, @NotNull String, @NotNull Serializable> getDumper() {
+    protected @NotNull TriConsumer<IConfiguration, String, Serializable> getDumper() {
         return (c, s, ser) -> c.set(s, SerializeUtils.serializeToBase64(ser));
     }
 }
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/SetYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/SetYAMLParser.java
index 63c5ba6..8430df7 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/SetYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/SetYAMLParser.java
@@ -30,7 +30,7 @@ public SetYAMLParser() {
      * @return the loader
      */
     @Override
-    protected @NotNull BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable Set<T>> getLoader() {
+    protected @NotNull BiFunctionException<IConfiguration, String, Set<T>> getLoader() {
         return (c, s) -> {
             @Nullable Collection<T> object = super.getLoader().apply(c, s);
             return new HashSet<>(object);
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/UUIDYAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/UUIDYAMLParser.java
index 2aace3b..8f7e6df 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/UUIDYAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/UUIDYAMLParser.java
@@ -4,7 +4,6 @@
 import it.fulminazzo.fulmicollection.interfaces.functions.BiFunctionException;
 import it.fulminazzo.fulmicollection.interfaces.functions.TriConsumer;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import java.util.UUID;
 
@@ -26,7 +25,7 @@ public UUIDYAMLParser() {
      * @return the loader
      */
     @Override
-    protected @NotNull BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable UUID> getLoader() {
+    protected @NotNull BiFunctionException<IConfiguration, String, UUID> getLoader() {
         return (c, s) -> {
             String raw = c.getString(s);
             return UUID.fromString(raw);
@@ -39,7 +38,7 @@ public UUIDYAMLParser() {
      * @return the dumper
      */
     @Override
-    protected @NotNull TriConsumer<@NotNull IConfiguration, @NotNull String, @Nullable UUID> getDumper() {
+    protected @NotNull TriConsumer<IConfiguration, String, UUID> getDumper() {
         return (c, s, u) -> c.set(s, u == null ? null : u.toString());
     }
 }
\ No newline at end of file
diff --git a/src/main/java/it/fulminazzo/yamlparser/parsers/YAMLParser.java b/src/main/java/it/fulminazzo/yamlparser/parsers/YAMLParser.java
index 325ca5d..d8e4d53 100644
--- a/src/main/java/it/fulminazzo/yamlparser/parsers/YAMLParser.java
+++ b/src/main/java/it/fulminazzo/yamlparser/parsers/YAMLParser.java
@@ -63,14 +63,14 @@ public void dump(@Nullable IConfiguration section, @Nullable String path, @Nulla
      *
      * @return the loader
      */
-    protected abstract BiFunctionException<@NotNull IConfiguration, @NotNull String, @Nullable O> getLoader();
+    protected abstract BiFunctionException<IConfiguration, String, O> getLoader();
 
     /**
      * Gets dumper.
      *
      * @return the dumper
      */
-    protected abstract TriConsumer<@NotNull IConfiguration, @NotNull String, @Nullable O> getDumper();
+    protected abstract TriConsumer<IConfiguration, String, O> getDumper();
 
     @Override
     public boolean equals(Object o) {