[ NoAccessorMethod ]
public bool message_forward { get; set; }
Forward all children messages, even those that would normally be filtered by the bin.
This can be interesting when one wants to be notified of the EOS state of individual elements, for example.
The messages are converted to an ELEMENT message with the bin as the source. The structure of the message is named `GstBinForwarded` and contains a field named `message` that contains the original forwarded Message.