code: static void extractString(Elements elementUtils, Element item, Class<? extends Annotation> annotationClass, AnnotationAttributeType attribute, OnAttributeFoundListener listener) {
  		extractAttributeValue(elementUtils, item, annotationClass.getCanonicalName(), attribute, listener);
  	}
docs: Extract string.
  
  @param elementUtils the element utils
  @param item the item
  @param annotationClass the annotation class
  @param attribute the attribute
  @param listener the listener