public AsyncUnaryCall <Response> PlainExtractAsync(SimpleRequest request, CallOptions options) => throw new NotImplementedException();
 public Response PlainExtract(SimpleRequest request, CallOptions options) => throw new NotImplementedException();
 public Response PlainFullField(SimpleRequest request, CallOptions options) => throw new NotImplementedException();
 public Response PlainNoTemplate(SimpleRequest request, CallOptions options) => throw new NotImplementedException();
 public AsyncUnaryCall <Response> NoRoutingAsync(SimpleRequest request, CallOptions options) => throw new NotImplementedException();
 public Response NoRouting(SimpleRequest request, CallOptions options) => throw new NotImplementedException();