def METHOD_NAME(series):
    """Get an mbox representation of an entire series.
    Arguments:
        series: The Series object to convert.
    Returns:
        A string for the mbox file.
    """
    mbox = []
    for patch in series.patches.all().order_by('number'):
        mbox.append(patch_to_mbox(patch))
    return '\n'.join(mbox)