/**
* Checks if a message has the requested attribute. The class of the required attribute has to be
* the same. Subclasses will not be detected.
*
* @param message the message to check
* @param attributeClass the attribute which should be included in the message
* @throws Exception if the requested attribute is not included in the message
*/
public <T extends Attribute> void checkForAttribute(
final Message message, final Class<T> attributeClass) throws Exception {
if (!message.hasAttribute(attributeClass)) {
final String errorMessage =
attributeClass.getSimpleName() + " attribute expected"; // $NON-NLS-1
throw new Exception(errorMessage);
}
}
