code: public static <T> T getBean(BeanManager bm, Class<T> clazz) {
          return getBean(bm, clazz, (Annotation[]) null);
      }
docs: Retrieves the bean for the given class from the given bean manager
  qualified with #{@link Default}.
  
  @param <T>   The type of the bean to look for
  @param bm    The bean manager which should be used for the lookup
  @param clazz The class of the bean to look for
  @return The bean instance if found, otherwise null