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
const data = stringToUTF8String(stream.getString());
          if (data) {
            metadata = new MetadataParser(data).serializable;
          }
        } catch (e) {
          if (e instanceof MissingDataException) {
            throw e;
          }
          info("Skipping invalid metadata.");
        }
      }
    }
    return shadow(this, "metadata", metadata);
  }
  get markInfo() {
    let markInfo = null;
    try {
      markInfo = this._readMarkInfo();
    } catch (ex) {
      if (ex instanceof MissingDataException) {
        throw ex;
      }
      warn("Unable to read mark info.");
    }
    return shadow(this, "markInfo", markInfo);
  }
  /**
   * @private
   */
  _readMarkInfo() {