https://access.redhat.com/webassets/avalon/d/red_hat_jboss_enterprise_application_platform/8.1/javadocs/io/smallrye/reactive/messaging/TracingMetadata.html
TracingMetadata (Red Hat JBoss Enterprise Application Platform 8.1.1.GA + JBoss EAP XP 6.0.0.GA...
declaration: package: io.smallrye.reactive.messaging, class: TracingMetadata
https://bugzilla.mozilla.org/show_bug.cgi?id=1195232
1195232 - Stop using TracingMetadata from GeckoProfiler.h
RESOLVED (vporof) in DevTools - Performance Tools (Profiler/Timeline). Last updated 2018-06-13.
stopusingh