code: function _GpfClassDefMember (name, defaultValue, type) {
      /*jshint validthis:true*/ // constructor
      this._name = name;
      this._setDefaultValue(defaultValue);
      this._setType(type || "undefined");
  }
docs: Class member definition
  - Contains a reference to the class definition where the member is defined
  - Owns the name, the default value and a reference type
  
  @param {String} name Member name
  @param {*} defaultValue Member default / initial value
  @param {String} [type=typeof defaultValue] type Member type
  @class