code: @OverrideOnDemand
    protected boolean showInputFormAgain (@Nonnull final WPECTYPE aWPEC,
                                          @Nullable final DATATYPE aSelectedObject,
                                          @Nonnull final FormErrorList aFormErrors,
                                          @Nonnull final EWebPageFormAction eFormAction)
    {
      return false;
    }
docs: Show the input form again after successful
  {@link #validateAndSaveInputParameters(IWebPageExecutionContext, IHasID, FormErrorList, EWebPageFormAction)}?
  Only called in case of success because otherwise the form is shown anyway.
  
  @param aWPEC
  Web page execution context. Never <code>null</code>.
  @param aSelectedObject
  The currently selected object. May be <code>null</code> when
  creating a new object
  @param aFormErrors
  Object for storing the validation errors. Never <code>null</code>.
  @param eFormAction
  The form action mode. Either create, copy or edit.
  @return <code>true</code> to show the input form again, <code>false</code>
  not to