docs: @BetaApi
    public final Operation insertTargetHttpProxy(
        ProjectName project, TargetHttpProxy targetHttpProxyResource) {
  
      InsertTargetHttpProxyHttpRequest request =
          InsertTargetHttpProxyHttpRequest.newBuilder()
              .setProject(project == null ? null : project.toString())
              .setTargetHttpProxyResource(targetHttpProxyResource)
              .build();
      return insertTargetHttpProxy(request);
    }