code: function _gpfIsImplementedBy (inspectedObject, interfaceDefinition) {
      var member,
          memberReference,
          memberValue,
          memberType;
      /*
       * IMPORTANT note: we test the object itself (i.e. own members and the prototype).
       * That's why the hasOwnProperty is skipped
       */
      /*jslint forin:true*/
      for (member in interfaceDefinition.prototype) {
          if ("constructor" === member) { // Object
              continue;
          }
          memberReference = interfaceDefinition.prototype[member];
          memberValue = inspectedObject[member];
          memberType = typeof memberValue;
          if (typeof memberReference !== memberType) {
              return false;
          }
          if ("function" === memberType && memberReference.length !== memberValue.length) {
              return false;
          }
      }
      return true;
  }
docs: Verify that the object implements the current interface
  
  @param {Object} inspectedObject Object (or class) to inspect
  @param {gpf.interfaces.Interface} interfaceDefinition Reference interface
  @return {Boolean} True if implemented