public void inboundMessage(int seqNo) {
            if (inboundReceivedOrClosed.compareAndSet(false, true)) {
                // Because inboundUncompressedSize() might be called after streamClosed(),
                // we will report stats in callEnded(). Note that this attempt is already committed.
                attemptsState.inboundMetricTracer = this;
            }
        }
Provides factories for {@link io.grpc.StreamTracer} that records metrics.

<p>
On the client-side, a factory is created for each call, and the factory creates a stream tracer for each attempt.

<b>Note:</b> This class uses experimental grpc-java-API features.
grpc-client-spring-boot-starter/src/main/java/net/devh/boot/grpc/client/metrics/MetricsClientStreamTracers.java