code: function _gpfUsesSuper (method) {
      var parts = method.toString().split("._super");
      return !parts.every(function (part) {
          return -1 !== _gpfIdentifierOtherChars.indexOf(part.charAt(0));
      });
  }
docs: region _super method 
  Detects if the method calls the _super method.
  The method source is split on the "._super" key and it check first char after to see if it is not an identifier
  character (meaning it is more than just _super).
  
  @param {Function} method
  @return {Boolean}