Check if a model exists in the registry
        :param name: model name to test
        :return: True if yes

def has_model(self, name):
        """
        Check if a model exists in the registry
        :param name: model name to test
        :return: True if yes
        """
        return self.es.exists(index=self.index_name,
                              doc_type=self.DOC_TYPE, id=name)