/*
  * (non-Javadoc)
  * @see org.eclipse.jface.preference.PreferencePage#performOk()
  */
 public boolean performOk() {
   if (fConfigurationBlock != null) {
     if (!fConfigurationBlock.performOk()) {
       return false;
     }
     PHPVersionProvider.getInstance()
         .notifyChange(
             (IProject) getElement().getAdapter(IProject.class),
             PHPVersion.byAlias(fConfigurationBlock.getPHPVersionValue()));
   }
   return super.performOk();
 }