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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_restart_freeze():
    '''
    Displays whether 'restart on freeze' is on or off if supported

    :return: A string value representing the "restart on freeze" settings
    :rtype: string

    CLI Example:

    .. code-block:: bash

        salt '*' power.get_restart_freeze
    '''
    ret = salt.utils.mac_utils.execute_return_result(
        'systemsetup -getrestartfreeze')
    return salt.utils.mac_utils.validate_enabled(
        salt.utils.mac_utils.parse_return(ret)) == 'on'