@java.lang.Override
  public int hashCode() {
    if (memoizedHashCode != 0) {
      return memoizedHashCode;
    }
    int hash = 41;
    hash = (19 * hash) + getDescriptor().hashCode();
    hash = (37 * hash) + PARENT_FIELD_NUMBER;
    hash = (53 * hash) + getParent().hashCode();
    if (hasWorkflow()) {
      hash = (37 * hash) + WORKFLOW_FIELD_NUMBER;
      hash = (53 * hash) + getWorkflow().hashCode();
    }
    hash = (37 * hash) + WORKFLOW_ID_FIELD_NUMBER;
    hash = (53 * hash) + getWorkflowId().hashCode();
    hash = (29 * hash) + getUnknownFields().hashCode();
    memoizedHashCode = hash;
    return hash;
  }
<pre>
Required. The ID of the workflow to be created. It has to fulfill the
following requirements:

* Must contain only letters, numbers, underscores and hyphens.
* Must start with a letter.
* Must be between 1-64 characters.
* Must end with a number or a letter.
* Must be unique within the customer project and location.
</pre>

<code>string workflow_id = 3 [(.google.api.field_behavior) = REQUIRED];</code>

@return The bytes for workflowId.
java-workflows/proto-google-cloud-workflows-v1beta/src/main/java/com/google/cloud/workflows/v1beta/CreateWorkflowRequest.java