diff --git a/lib/model.js b/lib/model.js
index 04d4cd43..cc78bba8 100644
--- a/lib/model.js
+++ b/lib/model.js
@@ -45,6 +45,8 @@ var BASE_TYPES = {
  *
  * @class
  * @param {Object} data Initial object data
+ * @param {Object} options An object to control the instantiation
+ * @returns {ModelBaseClass} an instance of the ModelBaseClass
  */
 function ModelBaseClass(data, options) {
   options = options || {};
@@ -71,7 +73,7 @@ function ModelBaseClass(data, options) {
 ModelBaseClass.prototype._initProperties = function(data, options) {
   var self = this;
   var ctor = this.constructor;
-                                     // issue#1261
+
   if (typeof data !== 'undefined' && data.constructor &&
       typeof (data.constructor) !== 'function') {
     throw new Error(g.f('Property name "{{constructor}}" is not allowed in %s data', ctor.modelName));
@@ -371,6 +373,11 @@ ModelBaseClass.defineProperty = function(prop, params) {
   }
 };
 
+/**
+ * Get model property type.
+ * @param {String} propName Property name
+ * @returns {String} Name of property type
+ */
 ModelBaseClass.getPropertyType = function(propName) {
   var prop = this.definition.properties[propName];
   if (!prop) {
@@ -384,6 +391,11 @@ ModelBaseClass.getPropertyType = function(propName) {
   return prop.type.name;
 };
 
+/**
+ * Get model property type.
+ * @param {String} propName Property name
+ * @returns {String} Name of property type
+ */
 ModelBaseClass.prototype.getPropertyType = function(propName) {
   return this.constructor.getPropertyType(propName);
 };
@@ -401,6 +413,9 @@ ModelBaseClass.toString = function() {
  * Returns a canonical object representation (no getters and setters).
  *
  * @param {Boolean} onlySchema Restrict properties to dataSource only.  Default is false.  If true, the function returns only properties defined in the schema;  Otherwise it returns all enumerable properties.
+ * @param {Boolean} removeHidden Boolean flag as part of the transformation. If true, then hidden properties should not be brought out.
+ * @param {Boolean} removeProtected Boolean flag as part of the transformation. If true, then protected properties should not be brought out.
+ * @returns {Object} returns Plain JSON object
  */
 ModelBaseClass.prototype.toObject = function(onlySchema, removeHidden, removeProtected) {
   if (onlySchema === undefined) {
@@ -527,6 +542,11 @@ ModelBaseClass.prototype.toObject = function(onlySchema, removeHidden, removePro
   return data;
 };
 
+/**
+ * Checks if property is protected.
+ * @param {String} propertyName Property name
+ * @returns  {Boolean} true or false if proptected or not.
+ */
 ModelBaseClass.isProtectedProperty = function(propertyName) {
   var Model = this;
   var settings = Model.definition && Model.definition.settings;
@@ -546,6 +566,11 @@ ModelBaseClass.isProtectedProperty = function(propertyName) {
   }
 };
 
+/**
+ * Checks if property is hidden.
+ * @param {String} propertyName Property name
+ * @returns {Boolean} true or false if hidden or not.
+ */
 ModelBaseClass.isHiddenProperty = function(propertyName) {
   var Model = this;
   var settings = Model.definition && Model.definition.settings;
@@ -614,6 +639,12 @@ ModelBaseClass.prototype.inspect = function(depth) {
   });
 };
 
+/**
+ *
+ * @param {String} anotherClass could be string or class. Name of the class or the class itself
+ * @param {Object} options An object to control the instantiation
+ * @returns {ModelClass}
+ */
 ModelBaseClass.mixin = function(anotherClass, options) {
   if (typeof anotherClass === 'string') {
     this.modelBuilder.mixins.applyMixin(this, anotherClass, options);