private static final LoadingCache<Class<?>, ContextReferenceExtractor> EXTRACTORS = CacheBuilder.newBuilder()
.weakKeys().build(new CacheLoader<Class<?>, ContextReferenceExtractor>() {
@Override
private static final LoadingCache<Class<?>, ContextReferenceExtractor> EXTRACTORS = CacheBuilder.newBuilder()
.weakKeys().build(new CacheLoader<Class<?>, ContextReferenceExtractor>() {
@Override