digraph {
    0 [ label = "\"FiniteIterSource\"" ]
    1 [ label = "\"Map\"" ]
    2 [ label = "\"ChannelSink\"" ]
    3 [ label = "\"ComplexNco\"" ]
    4 [ label = "\"ComplexOscillator\"" ]
    5 [ label = "\"Repeat\"" ]
    6 [ label = "\"Multiplier\"" ]
    7 [ label = "\"Tee\"" ]
    8 [ label = "\"Fft\"" ]
    9 [ label = "\"ChannelSink\"" ]
    0 -> 1 [ label = "()" ]
    1 -> 5 [ label = "()" ]
    3 -> 6 [ label = "()" ]
    4 -> 6 [ label = "()" ]
    5 -> 3 [ label = "()" ]
    6 -> 7 [ label = "()" ]
    7 -> 2 [ label = "()" ]
    7 -> 8 [ label = "()" ]
    8 -> 9 [ label = "()" ]
}