whole_func_string: function (page) {
              var parents = scope.tree.pathToIdArray(page.path);
              return parents[ parents.length - 1 ];
          }
func_code_string: function (page) {
              var parents = scope.tree.pathToIdArray(page.path);
              return parents[ parents.length - 1 ];
          }
func_documentation_string: Get a page object by parent id *