Sends args and kwargs to any configured callbacks.
    This handles the cases where the 'callbacks' variable
    is ``None``, a single function, or a list.

def _multiple_callbacks(callbacks, *args, **kwargs):
    """Sends args and kwargs to any configured callbacks.
    This handles the cases where the 'callbacks' variable
    is ``None``, a single function, or a list.
    """
    if isinstance(callbacks, list):
        for cb in callbacks:
            cb(*args, **kwargs)
        return
    if callbacks:
        callbacks(*args, **kwargs)