code: private Request buildEmptyRequest(Request request) {
          RequestBody body = RequestBody.create(MediaType.parse("application/json"), "{}");
          if (request.method().equalsIgnoreCase("get")) {
              return request;
          } else {
              return request.newBuilder().method(request.method(), body).build();
          }
      }
docs: Removes request body used for EKV authorization.
  
  @param request
  unprotected request without auth token.
  @return request with removed body.