(
    tasks: [
        (
            id: "src",
            type: "cu_rp_sn754410::test_support::SN754410TestSrc",
        ),
        (
            id: "pwm",
            type: "cu_rp_sn754410::SN754410",
        ),
     ],
    cnx: [
        (src: "src",  dst: "pwm",   msg: "cu_rp_sn754410::MotorMsg"),
    ],
)