CA Command PVs should be set back to zero when complete

[GDYendell]

This could work

def _create_and_link_command_pv(
    pv_prefix: str, pv_name: str, attr_name: str, method: Command
) -> None:
    pv = f"{pv_prefix}:{pv_name}"

    async def wrapped_method(value: Any):
        if not value:
            return

        tracer.log_event("Command PV put", topic=method, pv=pv)

        await method.fn()

        record.set(0, process=False)

    record = builder.Action(
        f"{pv_prefix}:{pv_name}",
        on_update=wrapped_method,
        blocking=True,
        initial_value=0,
        ZNAM="Idle",
        ONAM="Active",
    )

Is this the right thing to do? The if not value seems to be necessary to stop it calling in a loop, despite the process=False.