docs: public ZooActionBuilder validate(String jsonPath, String expectedValue) {
          JsonPathMessageValidationContext validationContext = action.getJsonPathMessageValidationContext();
          if (validationContext == null) {
              validationContext = new JsonPathMessageValidationContext();
              action.setJsonPathMessageValidationContext(validationContext);
          }
          validationContext.getJsonPathExpressions().put(jsonPath, expectedValue);
          return this;
      }