def list_items(self):
        """Get all Azure Kubernetes Services"""

        self.log('List all Azure Kubernetes Services')

        try:
            response = self.containerservice_client.managed_clusters.list(
                self.resource_group)
        except AzureHttpError as exc:
            self.fail('Failed to list all items - {0}'.format(str(exc)))

        results = []
        for item in response:
            if self.has_tags(item.tags, self.tags):
                results.append(self.serialize_obj(item, AZURE_OBJECT_CLASS))

        return results