code: public String getProjectId() {
      try {
        String gcloudProject = gcloud.getConfig().getProject();
        if (gcloudProject == null || gcloudProject.trim().isEmpty()) {
          throw new RuntimeException("Project was not found in gcloud config");
        }
        return gcloudProject;
      } catch (CloudSdkNotFoundException
          | CloudSdkOutOfDateException
          | CloudSdkVersionFileException
          | IOException
          | ProcessHandlerException ex) {
        throw new RuntimeException("Failed to read project from gcloud config", ex);
      }
    }
docs: Return gcloud config property for project, or error out if not found.