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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 create_swap_disk(vm_, linode_id, swap_size=None):
    r'''
    Creates the disk for the specified Linode.

    vm\_
        The VM profile to create the swap disk for.

    linode_id
        The ID of the Linode to create the swap disk for.

    swap_size
        The size of the disk, in MB.
    '''
    kwargs = {}

    if not swap_size:
        swap_size = get_swap_size(vm_)

    kwargs.update({'LinodeID': linode_id,
                   'Label': vm_['name'],
                   'Type': 'swap',
                   'Size': swap_size
                  })

    result = _query('linode', 'disk.create', args=kwargs)

    return _clean_data(result)