public boolean hasWorkflow() {
      return ((bitField0_ & 0x00000001) != 0);
    }
<pre>
Required. Workflow to be updated.
</pre>

<code>
.google.cloud.workflows.v1beta.Workflow workflow = 1 [(.google.api.field_behavior) = REQUIRED];
</code>

@return Whether the workflow field is set.
java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/UpdateWorkflowRequest.java