'Populate required identifiers. These are arguments without which
the resource cannot be used. Identifiers become arguments for
operations on the resource.'

def _load_identifiers(self, attrs, meta, resource_model, resource_name):

    for identifier in resource_model.identifiers:
        meta.identifiers.append(identifier.name)
        attrs[identifier.name] = self._create_identifier(identifier, resource_name)
