docs: fixed interfaces and implemented classes

made it so classes define and properly implement methods tey're supposed to for docs

src/HashSet.js

@@ -4,7 +4,7 @@ import SetInterface from './SetInterface.js';
 /**
  * HashSet representation
  * @class
- * @implements SetInterface
+ * @implements {SetInterface}
  * @param {number} [initialCapacity=13] - The initial size of the hashset
  *
  * @example

src/MultiMap.js

@@ -1,15 +1,16 @@
 import RBTree from "./RedBlackTree.js";
 
 /**
- * @implements MultiMapInterFace
- * @extends RedBlackTree
+ * @class
+ * @implements {MultiMapInterface}
+ * @extends {RBTree}
  */
 class MultiMap extends RBTree {
   constructor(c) {
     super(c);
   }
 
-  puts(key, value) {
+  put(key, value) {
     const v = super.getVal(key);
     if (v) {
       if (v.indexOf(value) === -1) {

src/MultiMapInterface.js

@@ -1,6 +1,7 @@
 /**
  * Maps one key to multiple values but does not contain duplicate kv pairs
- * @extends MapInterface
+ * 
+ * @interface
  *
  */
 class MultiMapInterface {

src/Set.js

@@ -5,7 +5,7 @@ import RBTree from './RedBlackTree.js';
 /**
  * Set representaion
  * @class
- * @implements SetInterface
+ * @implements {SetInterface}
  * @param {function} comparator - @see Global#defaultComparator
  *
  * @example
@@ -45,6 +45,18 @@ class Set extends SetInterface {
   max() {
     return this.map.max();
   }
+
+  union(thatSet){
+    return super.union(thatSet);
+  }
+
+  intersect(thatSet){
+    return super.intersect(thatSet);
+  }
+
+  diff(thatSet){
+    return super.diff(thatSet);
+  }
 }
 
 export default Set;

src/SetInterface.js

@@ -1,6 +1,8 @@
 /**
- * Set Interface
+ * Collection of elements that contain no duplicates
+ * 
  * @interface
+ * 
  */
 class SetInterface {
   constructor() {}