GstControllerGObject @object: @Varargs: @Returns: @object: @Varargs: @Returns: @object: @Returns: @object: @controller: @Returns: @object: @Returns: @object: @timestamp: @Returns: @object: @property_name: @Returns: @object: @property_name: @csource: @Returns: @object: @timestamp: @value_arrays: @Returns: @object: @timestamp: @value_array: @Returns: @object: @Returns: @object: @control_rate: