def configuration(self):
        """Instance depends on the API version:

           * 2018-01-01-preview: :class:`ConfigurationOperations<azure.mgmt.eventhub.v2018_01_01_preview.operations.ConfigurationOperations>`
        """
        api_version = self._get_api_version('configuration')
        if api_version == '2018-01-01-preview':
            from .v2018_01_01_preview.operations import ConfigurationOperations as OperationClass
        else:
            raise NotImplementedError("APIVersion {} is not available".format(api_version))
        return OperationClass(self._client, self.config, Serializer(self._models_dict(api_version)), Deserializer(self._models_dict(api_version)))
Instance depends on the API version:

           * 2018-01-01-preview: :class:`ConfigurationOperations<azure.mgmt.eventhub.v2018_01_01_preview.operations.ConfigurationOperations>`