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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def get_disabled(jail=None):
    '''
    Return what services are available but not enabled to start at boot

    .. versionchanged:: 2016.3.4

    Support for jail (representing jid or jail name) keyword argument in kwargs

    CLI Example:

    .. code-block:: bash

        salt '*' service.get_disabled
    '''
    en_ = get_enabled(jail)
    all_ = get_all(jail)
    return sorted(set(all_) - set(en_))