Membrane.Bin.handle_stopped_to_terminating

You're seeing just the callback handle_stopped_to_terminating, go back to Membrane.Bin module for more information.

handle_stopped_to_terminating(context, state)

handle_stopped_to_terminating(
  context :: Membrane.Bin.CallbackContext.PlaybackChange.t(),
  state :: state_t()
) :: callback_return_t()

Callback invoked when bin is in :terminating state, i.e. all its children are in this state.