code: function _gpfBuildPropertyFunc (template, member) {
      var src,
          params,
          start,
          end;
      // Replace all occurrences of _MEMBER_ with the right name
      src = template.toString().split("_MEMBER_").join(member);
      // Extract parameters
      start = src.indexOf("(") + 1;
      end = src.indexOf(")", start) - 1;
      params = src.substr(start, end - start + 1).split(",").map(function (name) {
          return name.trim();
      });
      // Extract body
      start = src.indexOf("{") + 1;
      end = src.lastIndexOf("}") - 1;
      src = src.substr(start, end - start + 1);
      return _gpfFunc(params, src);
  }
docs: Builds a new property function
  
  @param {Boolean} template Template to be used
  @param {String} member Value of _MEMBER_
  @return {Function}