code: function (name, value) {
              var overriddenMember = this._extend.prototype[name];
              if (undefined !== overriddenMember) {
                  this._checkOverridenMember(value, overriddenMember);
              }
          }
docs: Check if the member overrides an inherited one
  
  @param {String} name Member name
  @param {*} value Member value
  @throws {gpf.Error.InvalidClassOverride}
  @since 0.1.7