def predict1(payload):
    """
    Define a hosted function that echos out the input. When creating a
    predict image, this is the function that is hosted on the invocations
    endpoint.

    Arguments:
        payload (dict[str, object]): This is the payload that will eventually
            be sent to the server using a POST request.

    Returns:
        payload (dict[str, object]): The output of the function is expected to
            be either a dictionary (like the function input) or a JSON string.
    """
    print('Predict 1!')
    return payload