docs: @BetaApi
    public final AggregatedListTargetInstancesPagedResponse aggregatedListTargetInstances(
        ProjectName project) {
      AggregatedListTargetInstancesHttpRequest request =
          AggregatedListTargetInstancesHttpRequest.newBuilder()
              .setProject(project == null ? null : project.toString())
              .build();
      return aggregatedListTargetInstances(request);
    }