code: public boolean isAnnotationPresent(Class<? extends Annotation> annTypeTest)
    {
      for (Class<?> annType : _annTypes) {
        if (annType.equals(annTypeTest)) {
          return true;
        }
      }
  
      return false;
    }
docs: Tests if annotation type is present in Key's annotations
  
  @param annTypeTest test annotation
  @return true if present, false otherwise