docs: private static JsonNode findNestedNode(JsonNode jsonNode, String composedKey) {
          String[] jsonNodeKeys = splitKeyByFlatteningDots(composedKey);
          for (String jsonNodeKey : jsonNodeKeys) {
              jsonNode = jsonNode.get(unescapeEscapedDots(jsonNodeKey));
              if (jsonNode == null) {
                  return null;
              }
          }
          return jsonNode;
      }