code: public static <A extends Annotation> boolean isAnnotationPresent(Class<?> clazz,
  			Class<A> annotationType) {
  		
  		if (findAnnotation(clazz, annotationType) != null) return true;
  		return false;
  	}
docs: Verifies if an annotation is present at a class type hierarchy.
  
  @param <A> The annotation type.
  @param clazz The class.
  @param annotationType The annotation.
  @return Whether the annotation is present at the class hierarchy or not.
  @since 0.3.0