whole_func_string: function (path, id, callback) {
              var parents = scope.tree.pathToPageArray(path);
              for (var p in parents) {
                  callback(parents[p]);
              }
          }
func_code_string: function (path, id, callback) {
              var parents = scope.tree.pathToPageArray(path);
              for (var p in parents) {
                  callback(parents[p]);
              }
          }
func_documentation_string: Execute callback on all parents *