code: public FacesConfigFlowDefinitionFlowCallFlowReferenceType<FacesConfigFlowDefinitionFlowCallType<T>> getOrCreateFlowReference()
     {
        Node node = childNode.getOrCreate("flow-reference");
        FacesConfigFlowDefinitionFlowCallFlowReferenceType<FacesConfigFlowDefinitionFlowCallType<T>> flowReference = new FacesConfigFlowDefinitionFlowCallFlowReferenceTypeImpl<FacesConfigFlowDefinitionFlowCallType<T>>(this, "flow-reference", childNode, node);
        return flowReference;
     }
docs: If not already created, a new <code>flow-reference</code> element with the given value will be created.
  Otherwise, the existing <code>flow-reference</code> element will be returned.
  @return  a new or existing instance of <code>FacesConfigFlowDefinitionFlowCallFlowReferenceType<FacesConfigFlowDefinitionFlowCallType<T>></code>