code: func (m *Manager) GetTxProcessor(channel string) (transaction.TMSTxProcessor, error) {
  	identityDeserializerManager, err := m.IdentityDeserializerManager.Deserializer(channel)
  	if err != nil {
  		return nil, errors.Wrapf(err, "failed getting identity deserialiser manager for channel '%s'", channel)
  	}
  
  	return &plain.Verifier{IssuingValidator: &AllIssuingValidator{Deserializer: identityDeserializerManager}}, nil
  }
docs: // GetTxProcessor returns a TMSTxProcessor that is used to process token transactions.