code: @Override
      public BackchannelAuthenticationIssueResponse backchannelAuthenticationIssue(BackchannelAuthenticationIssueRequest request) throws AuthleteApiException
      {
          return executeApiCall(
                  new ServicePostApiCaller<BackchannelAuthenticationIssueResponse>(
                          BackchannelAuthenticationIssueResponse.class, request, BACKCHANNEL_AUTHENTICATION_ISSUE_API_PATH));
      }
docs: Call {@code /api/backchannel/authentication/issue} API.