PropagationToken

Kotlin |Java

public interface PropagationToken

Known direct subclasses

`PlatformThreadContextElement`	We use the `PlatformThreadContextElement` construct to know when a coroutine has suspended, and about to resume on a `Thread`.
`PropagationUnsupportedToken`	The `PropagationToken` instance that should be returned when context propagation is unsupported by the underlying `Tracer`.

A token representing state carried forward for context propagation.

This interface is only useful for libraries that want to bring their own implementation of context propagation.

Summary

Public methods
`abstract CoroutineContext.Element`	`@DelicateTracingApi contextElementOrNull()`

@DelicateTracingApi
abstract CoroutineContext.Element contextElementOrNull()

Returns
`CoroutineContext.Element`	a `CoroutineContext.Element` that needs to be installed in the `kotlinx.coroutines.currentCoroutineContext` prior to dispatching the suspending block of code being traced; if the token is being used in a suspending context.