RequestMetrics (instrumentation-api 1.9.2-alpha API)

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
@UnstableApi
public interface RequestMetrics
```
A factory for a RequestListener for recording metrics using a Meter.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`RequestListener`	`create(io.opentelemetry.api.metrics.Meter meter)`	Returns a `RequestListener` for recording metrics using the given `Meter`.

- Method Detail
  - create
```
RequestListener create(io.opentelemetry.api.metrics.Meter meter)
```
    Returns a RequestListener for recording metrics using the given Meter.