code: private static JsonElement findInJson(JsonElement jsonElement, String jsonPath) {
  
          final String[] route = JSON_PATH_PATTERN.split(jsonPath);
          JsonElement result = jsonElement;
  
          for (String key : route) {
              key = key.trim();
              if (key.isEmpty())
                  continue;
  
              if (result == null) {
                  result = JsonNull.INSTANCE;
                  break;
              }
  
              if (result.isJsonObject()) {
                  result = ((JsonObject) result).get(key);
              } else if (result.isJsonArray()) {
                  int value = Integer.valueOf(key) - 1;
                  result = ((JsonArray) result).get(value);
              } else break;
          }
  
          return result;
      }
docs: Finds an element in GSON's JSON document representation
  
  @param jsonElement A (potentially complex) element to search in
  @param jsonPath    Path in the given JSON to the desired table. Levels are dot-separated.
  E.g. 'model._output.variable_importances'.
  @return JsonElement, if found. Otherwise {@link JsonNull}.