private <T> void processItems(
     final CrestApiProcessor<T> processor,
     final CrestContainer<T> container,
     final JsonParser jsonParser)
     throws IOException {
   if (jsonParser.isExpectedStartArrayToken()) {
     while (jsonParser.nextToken() != JsonToken.END_ARRAY) {
       container.addEntry(processor.parseEntry((JsonNode) mapper.readTree(jsonParser)));
     }
   }
 }
 public <T> T downloadAndProcessData(final CrestApiProcessor<T> processor) {
   T result = null;
   try {
     final String data = accessor.getData(processor.getPath());
     if (StringUtils.isNotBlank(data)) {
       final JsonNode node = mapper.readTree(data);
       result = processor.parseEntry(node);
     } else if (LOGGER.isWarnEnabled()) {
       LOGGER.warn("No data to parse for " + processor.getClass().getSimpleName());
     }
   } catch (final IOException e) {
     if (LOGGER.isErrorEnabled()) {
       LOGGER.error("Could not download data", e);
     }
   }
   return result;
 }