Once I have I gRPC client (stub) created, say

client = new routeguide.RouteGuide(
    grpc.credentials.createInsecure() );

How do I pass metadata when calling a method? I know I can use (and I do) client.methodName(params); to call a method, but can I use something like client.methodName(params, metadata); ???

I want to pass a JWT token to the server to validate the user.

Thanks in advance.

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