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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 filesystem_absent(name, force=False, recursive=False):
    '''
    ensure filesystem is absent on the system

    name : string
        name of filesystem
    force : boolean
        try harder to destroy the dataset (zfs destroy -f)
    recursive : boolean
        also destroy all the child datasets (zfs destroy -r)

    .. warning::

        If a volume with ``name`` exists, this state will succeed without
        destroying the volume specified by ``name``. This module is dataset type sensitive.

    '''
    if not __utils__['zfs.is_dataset'](name):
        ret = {'name': name,
               'changes': {},
               'result': False,
               'comment': 'invalid dataset name: {0}'.format(name)}
    else:
        ret = _absent(name, 'filesystem', force, recursive)
    return ret