code: public FormInputHandler enabled(final Boolean theEnabled) {
  		Fields fields = new Fields(this);
  		fields.finder = fields.finder.enabled(theEnabled);
  		return new FormInputHandler(fields);
  	}
docs: Creates a new {@link FormInputHandler} based on this {@link FormInputHandler} that restricts the enabled status of
  ele.ments
  
  @param theEnabled
  restricts the {@code enabled} status of the element
  @return the new {@link FormInputHandler} instance