This checks if a pad has a buffer available that will be returned by a call to gstbase.aggregator_pad.AggregatorPad.peekBuffer or gstbase.aggregator_pad.AggregatorPad.popBuffer.
true if the pad has a buffer available as the next thing.
This checks if a pad has a buffer available that will be returned by a call to gstbase.aggregator_pad.AggregatorPad.peekBuffer or gstbase.aggregator_pad.AggregatorPad.popBuffer.