code: private static InputElement createHiddenInput(String name, String value) {
  
          InputElement input = Document.get().createHiddenInputElement();
          input.setName(name);
          input.setValue(value);
          return input;
      }
docs: Creates a hidden input field with the given name and value.<p>
  
  @param name the field name
  @param value the field value
  @return the input element