How to specify the protocol (HTTP/gRPC) for sending OpenTelemetry metrics?

The temporalio.runtime.OpenTelemetryConfig class only allows us to specify a url. How do I specify the protocol? Do I just use, for example, grpc://localhost:4317 if I want to connect to a gRPC endpoint?

It is always assumed to be gRPC. This is the same type of URL you might provide to OpenTelemetry OTLP Exporters — OpenTelemetry Python documentation.