code: def set_password(self, raw_password):
          
          if raw_password is None:
              self.set_unusable_password()
          else:
              xmpp_backend.set_password(self.node, self.domain, raw_password)
docs: Calls :py:func:`~xmpp_backends.base.XmppBackendBase.set_password` for the user.
  
          If password is ``None``, calls :py:func:`~xmpp_backends.base.XmppBackendBase.set_unusable_password`.