code: function (member, attribute) {
              _gpfAssertAttributeOnly(attribute);
              member = _gpfEncodeAttributeMember(member);
              var array = this._members[member];
              if (undefined === array) {
                  array = this._members[member] = new _gpfA.Array();
              }
              array._array.push(attribute);
              ++this._count;
          }
docs: Associate an attribute to a member
  
  @param {String} member member name
  @param {gpf.attributes.Attribute} attribute attribute to map