code: @SuppressWarnings("unchecked")
  	public static <T> T getAnnotationValue(AnnotationMetadata importingClassMetadata, Class annotationClass, String name, T defaultValue) {
  		Map<String, Object> attributes = importingClassMetadata.getAnnotationAttributes(annotationClass.getName());
  		return attributes != null && attributes.containsKey(name) ? (T) attributes.get(name) : defaultValue;
  	}
docs: Get annotation method value.
  
  @param importingClassMetadata Metadata.
  @param annotationClass        Annotation class to look for.
  @param name                   Name of method.
  @param defaultValue           Default value if original value is null.
  @param <T>                    Type of returned value.
  @return Annotation value, or default value if original value is null.