The spec for this action:
https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PDF32000_2008.pdf#G11.2111850
An example of a form using this action:
https://www2.illinois.gov/rev/forms/reg/Documents/reg-1-mr.pdf
constructor(parameters) {
    super(parameters, { isRenderable: parameters.renderForms });
  }
  render() {
    this.container.className = "choiceWidgetAnnotation";
    const storage = this.annotationStorage;
    const id = this.data.id;
    
    
    
    
    
    
    
    storage.getValue(id, {
      value:
        this.data.fieldValue.length > 0 ? this.data.fieldValue[0] : undefined,
    });
    let { fontSize } = this.data.defaultAppearanceData;
    if (!fontSize) {
      fontSize = 9;
    }
    const fontSizeStyle = `calc(${fontSize}px * var(--zoom-factor))`;