private ChannelCredentialsSafeHandle CreateNativeCompositeCredentials(ChannelCredentials channelCredentials, CallCredentials callCredentials)
{
using (var callCreds = callCredentials.ToNativeCredentials())
{
var nativeComposite = ChannelCredentialsSafeHandle.CreateComposite(channelCredentials.ToNativeCredentials(), callCreds);
if (nativeComposite.IsInvalid)
{
throw new ArgumentException("Error creating native composite credentials. Likely, this is because you are trying to compose incompatible credentials.");
}
return(nativeComposite);
}
}