validationHandler = new ValidationEventHandler();
// Status handler that displays status to the wizard
statusHandler = new WizardFragmentStatusHandler(wizardHandle);
credentialsPart = new CloudFoundryCredentialsPart(cloudServer, new WizardHandleContext(wizardHandle));
// Changes in the credentials part (e.g. username, password, server URL)
// should
// notify the validation handler so that it can perform validations
credentialsPart.addPartChangeListener(validationHandler);