src = graph.add_component(MySource, 'src')
sink = graph.add_component(MySink, 'sink')
conn = graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
src = graph.add_component(MySource, 'src')
sink = graph.add_component(MySink, 'sink')
conn = graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])