GSignondSecretStorage @parent_class: @open_db: @close_db: @clear_db: @is_open_db: @load_credentials: @update_credentials: @remove_credentials: @check_credentials: @load_data: @update_data: @remove_data: @get_last_error: @self: @creds: @Returns: @self: @Returns: @self: @Returns: @self: @Returns: @self: @Returns: @self: @id: @Returns: @self: @id: @method: @Returns: @self: @Returns: @self: @id: @Returns: @self: @id: @method: @Returns: @self: @creds: @Returns: @self: @id: @method: @data: @Returns: