docs: public BaseResponse createCustomField(String name) {
          Preconditions.checkNotNull(name, "name should not be null.");
          CreateCustomFieldRequest createCustomFieldRequest = (new CreateCustomFieldRequest()).withName(name);
          InternalRequest internalRequest = createRequest(createCustomFieldRequest,
                  HttpMethodName.POST,
                  CUSTOM_FIELD);
          return this.invokeHttpClient(internalRequest, BaseResponse.class);
      }