code: def GSSAuth(auth_method, gss_deleg_creds=True):
      
      if _API == "MIT":
          return _SSH_GSSAPI(auth_method, gss_deleg_creds)
      elif _API == "SSPI" and os.name == "nt":
          return _SSH_SSPI(auth_method, gss_deleg_creds)
      else:
          raise ImportError("Unable to import a GSS-API / SSPI module!")
docs: Provide SSH2 GSS-API / SSPI authentication.
  
      :param str auth_method: The name of the SSH authentication mechanism
                              (gssapi-with-mic or gss-keyex)
      :param bool gss_deleg_creds: Delegate client credentials or not.
                                   We delegate credentials by default.
      :return: Either an `._SSH_GSSAPI` (Unix) object or an
               `_SSH_SSPI` (Windows) object
  
      :raises: ``ImportError`` -- If no GSS-API / SSPI module could be imported.
  
      :see: `RFC 4462 <http://www.ietf.org/rfc/rfc4462.txt>`_
      :note: Check for the available API and return either an `._SSH_GSSAPI`
             (MIT GSSAPI) object or an `._SSH_SSPI` (MS SSPI) object. If you
             get python-gssapi working on Windows, python-gssapi
             will be used and a `._SSH_GSSAPI` object will be returned.
             If there is no supported API available,
             ``None`` will be returned.