diff --git a/lib/include_utils.js b/lib/include_utils.js
index e9eb286d..e0788dd8 100644
--- a/lib/include_utils.js
+++ b/lib/include_utils.js
@@ -91,7 +91,11 @@ function join(oneToOneIdMap, oneToManyIdMap, mergeF) {
 }
 
 
-
+/**
+ * Map with arbitrary keys and values. User .set() and .get() to work with values instead of []
+ * @returns {{set: Function, get: Function, remove: Function, exist: Function, getKeys: Function}}
+ * @constructor
+ */
 function KVMap(){
   var _originalKeyFieldName = 'originalKey';
   var _valueKeyFieldName = 'value';