code: public FormInputHandler checkDefaults(final DefaultsProvider theDefaultsProvider) {
  		Fields fields = new Fields(this);
  		fields.defaultsProvider = theDefaultsProvider;
  		return new FormInputHandler(fields);
  	}
docs: Creates a new {@link FormInputHandler} based on this {@link FormInputHandler} using the specifed {@link DefaultsProvider}.
  
  @param theDefaultsProvider
  provides default values to check when {@link StepMode} is {@link StepMode#CHECK_DEFAULT}
  @return the new {@link FormInputHandler} instance