public OperationCallSettings.Builder<DeleteWorkflowRequest, Empty, OperationMetadata>
        deleteWorkflowOperationSettings() {
      return deleteWorkflowOperationSettings;
    }
Returns the builder for the settings used for calls to deleteWorkflow.
java-workflows/google-cloud-workflows/src/main/java/com/google/cloud/workflows/v1/stub/WorkflowsStubSettings.java