code: protected MetricSet newMetricsFor(final MethodDescriptor<?, ?> method) {
          log.debug("Creating new metrics for {}", method.getFullMethodName());
          return new MetricSet(newRequestCounterFor(method), newResponseCounterFor(method), newTimerFunction(method));
      }
docs: Creates a {@link MetricSet} for the given gRPC method. This will initialize all default counters and timers for
  that method.
  
  @param method The method to get the metric set for.
  @return The newly created metric set for the given method.