def METHOD_NAME():
    global cell
    cell = gto.Cell()
    cell.unit = 'B'
    cell.atom = '''
    C  0.          0.          0.
    C  1.68506879  1.68506879  1.68506879
    '''
    cell.a = '''
    0.          3.37013758  3.37013758
    3.37013758  0.          3.37013758
    3.37013758  3.37013758  0.
    '''
    cell.basis = 'gth-szv'
    cell.pseudo = 'gth-pade'
    cell.mesh = [19]*3
    cell.verbose = 5
    cell.output = '/dev/null'
    cell.build()