in jackson2/src/java/org/apache/fulcrum/json/jackson/Jackson2MapperService.java [302:309]
public <T> String serCollectionWithTypeReference(Collection<T> src, TypeReference collectionType,
Boolean cleanCache) throws JsonProcessingException {
String res = mapper.writerFor(collectionType).writeValueAsString(src);
if (cleanCache) {
cacheService.cleanSerializerCache(mapper);
}
return res;
}