docs: public ZooActionBuilder extract(String jsonPath, String variableName) {
          JsonPathVariableExtractor jsonPathVariableExtractor = new JsonPathVariableExtractor();
          Map<String, String> pathVariableMap = new HashMap<>();
          pathVariableMap.put(jsonPath, variableName);
          jsonPathVariableExtractor.setJsonPathExpressions(pathVariableMap);
          action.addVariableExtractors(jsonPathVariableExtractor);
          return this;
      }