code: public static JAnnotationUse getAnnotation(JAnnotatable annotatable, JClass annotationClass) {
  		for (JAnnotationUse annotation : annotatable.annotations()) {
  			if (annotation.getAnnotationClass().equals(annotationClass)) {
  				return annotation;
  			}
  		}
  
  		return null;
  	}
docs: Returns the annotation for the given field. This method has side effect as it initailizes the lazy list of
  annotations on the given {@code annotatable}.