* @param annotationType The annotation type to test.
*
* @return <code>true</code> if the annotation fulfills the above condtions, <code>false</code> otherwise.
*/
public boolean isConstraintAnnotation(Class<? extends Annotation> annotationType) {
Constraint constraint = annotationType.getAnnotation( Constraint.class );
if ( constraint == null ) {
return false;
}
assertMessageParameterExists( annotationType );