Kaba class InternalNodeData ed

class InternalNodeData

    # constructors
    func mut __init__()

    # functions
    func mut add_temp_sink(s: xfer[void])
    func mut cleanup_temp_sinks()
    func mut create_temp_sink0(node: void&, f: void->void) -> Sink&
    func mut create_temp_xsink0(node: void&, s: void&->void) -> XPSink&
    func mut unsubscribe(node: void&)