GstControlSource @get_value: @get_value_array: @parent_class: @bind: @self: @pspec: @Returns: @self: @timestamp: @value: @Returns: @self: @timestamp: @value_array: @Returns: @timestamp: @value: @property_name: @nbsamples: @sample_interval: @values: @self: @pspec: @Returns: @self: @timestamp: @value: @Returns: @self: @timestamp: @value_array: @Returns: