docs: public final void setFormat(String value) {
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.entry(this, tc, "setFormat", value);
          jmo.getPayloadPart().setField(JsPayloadAccess.FORMAT, value);
          if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
              SibTr.exit(this, tc, "setFormat");
      }