docs: public Request<UserBlocks> getByIdentifier(String identifier) {
          Asserts.assertNotNull(identifier, "identifier");
  
          String url = baseUrl
                  .newBuilder()
                  .addPathSegments("api/v2/user-blocks")
                  .addQueryParameter("identifier", identifier)
                  .build()
                  .toString();
          CustomRequest<UserBlocks> request = new CustomRequest<>(client, url, "GET", new TypeReference<UserBlocks>() {
          });
          request.addHeader("Authorization", "Bearer " + apiToken);
          return request;
      }