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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_fs(name, blade):
    '''
    Private function to
    check for existance of a filesystem
    '''
    _fs = []
    _fs.append(name)
    try:
        res = blade.file_systems.list_file_systems(names=_fs)
        return res.items[0]
    except rest.ApiException:
        return None