def METHOD_NAME(self):
    self.mol = gto.M(atom='O 0 0 0; H 0 0 1; H 0 1 0', basis='cc-pvdz', verbose=0)
    self.mf = scf.RHF(self.mol)
    self.mf.chkfile = tempfile.NamedTemporaryFile().name
    self.mf.conv_tol = 1e-12
    self.mf.run()
    self.gf2 = agf2.RAGF2(self.mf)
    self.gf2.conv_tol = 1e-7
    self.gf2.run()