def METHOD_NAME():
    op = relay.Var("f")
    arg_names = ["a", "b", "c", "d"]
    args = tvm.runtime.convert([relay.Var(n) for n in arg_names])
    call = relay.Call(op, args, None, None)
    assert call.op == op
    assert call.args == args
    assert call.span == None
    str(call)
    check_json_roundtrip(call)