Allow methods from plugins, etc. to be accessed from wrapped objects

lib/mongoose-subpopulate.js

@@ -323,6 +323,8 @@ function wrapModelObject (object) {
       })(i);
     }
   }
+
+  // Getters and setters for all schema attributes
   var schema = (object._schema || object.schema).paths;
   for (var i in schema) {
     (function (attr) {
@@ -370,6 +372,13 @@ function wrapModelObject (object) {
     })(i);
   }
 
+  // Allow all methods (from plugins, etc) to be accessed
+  for (var i in wrappedObject.schema.methods) {
+    (function (methodName) {
+      wrappedObject[methodName] = wrappedObject.schema.methods[methodName];
+    })(i);
+  }
+
   wrappedObject.getBare = function (callback) {
     var keys = Object.keys(wrappedObject.schema.paths);