@RestrictTo(value = {RestrictTo.Scope.LIBRARY_GROUP}) 
public interface MetricSource<T extends Object>

Modifier and Type	Method	Description
`abstract T`	`createStartMetrics()`
`abstract Unit`	`endMetrics(T startMetrics, Span span)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 abstract Unit endMetrics(T startMetrics, Span span)

Interface MetricSource