docs: protected void handleUnmappedAttribute(final Map<String, List<Object>> attributesToRelease, final String attributeName, final Object attributeValue) {
          LOGGER.debug("Found attribute [{}] that is not defined in pattern definitions", attributeName);
          if (excludeUnmappedAttributes) {
              LOGGER.debug("Excluding attribute [{}] given unmatched attributes are to be excluded", attributeName);
          } else {
              LOGGER.debug("Added unmatched attribute [{}] with value(s) [{}]", attributeName, attributeValue);
              attributesToRelease.put(attributeName, CollectionUtils.toCollection(attributeValue, ArrayList.class));
          }
      }