whole_func_string: function getCursorAdvanceMethods() {
      return cursorAdvanceMethods || (cursorAdvanceMethods = [
          IDBCursor.prototype.advance,
          IDBCursor.prototype.continue,
          IDBCursor.prototype.continuePrimaryKey,
      ]);
  }
func_code_string: function getCursorAdvanceMethods() {
      return cursorAdvanceMethods || (cursorAdvanceMethods = [
          IDBCursor.prototype.advance,
          IDBCursor.prototype.continue,
          IDBCursor.prototype.continuePrimaryKey,
      ]);
  }
func_documentation_string: This is a function to prevent it throwing up in node environments.