docs: @BetaApi
    public final ListTargetHttpProxiesPagedResponse listTargetHttpProxies(ProjectName project) {
      ListTargetHttpProxiesHttpRequest request =
          ListTargetHttpProxiesHttpRequest.newBuilder()
              .setProject(project == null ? null : project.toString())
              .build();
      return listTargetHttpProxies(request);
    }