@java.lang.Override
  public com.google.cloud.workflows.v1.WorkflowOrBuilder getWorkflowOrBuilder() {
    return workflow_ == null
        ? com.google.cloud.workflows.v1.Workflow.getDefaultInstance()
        : workflow_;
  }
<pre>
Required. Workflow to be created.
</pre>

<code>
.google.cloud.workflows.v1.Workflow workflow = 2 [(.google.api.field_behavior) = REQUIRED];
</code>
java-workflows/proto-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/CreateWorkflowRequest.java