code: @BetaApi
    public final Operation insertVpnTunnel(ProjectRegionName region, VpnTunnel vpnTunnelResource) {
  
      InsertVpnTunnelHttpRequest request =
          InsertVpnTunnelHttpRequest.newBuilder()
              .setRegion(region == null ? null : region.toString())
              .setVpnTunnelResource(vpnTunnelResource)
              .build();
      return insertVpnTunnel(request);
    }
docs: Creates a VpnTunnel resource in the specified project and region using the data included in the
  request.
  
  <p>Sample code:
  
  <pre><code>
  try (VpnTunnelClient vpnTunnelClient = VpnTunnelClient.create()) {
  ProjectRegionName region = ProjectRegionName.of("[PROJECT]", "[REGION]");
  VpnTunnel vpnTunnelResource = VpnTunnel.newBuilder().build();
  Operation response = vpnTunnelClient.insertVpnTunnel(region, vpnTunnelResource);
  }
  </code></pre>
  
  @param region Name of the region for this request.
  @param vpnTunnelResource VPN tunnel resource. (== resource_for beta.vpnTunnels ==) (==
  resource_for v1.vpnTunnels ==)
  @throws com.google.api.gax.rpc.ApiException if the remote call fails