Added a comment to androidx.tracing.perfetto.Trace

Bug: 289175284
Test: n/a
Change-Id: I9aff4b68940364db10a66e14e1b3e12c323e7e7e
diff --git a/tracing/tracing-perfetto/src/main/java/androidx/tracing/perfetto/Trace.kt b/tracing/tracing-perfetto/src/main/java/androidx/tracing/perfetto/Trace.kt
index 1fda07c..be279da 100644
--- a/tracing/tracing-perfetto/src/main/java/androidx/tracing/perfetto/Trace.kt
+++ b/tracing/tracing-perfetto/src/main/java/androidx/tracing/perfetto/Trace.kt
@@ -32,6 +32,7 @@
 import java.util.concurrent.locks.ReentrantReadWriteLock
 import kotlin.concurrent.withLock
 
+/** Allows for emitting trace events using Perfetto SDK. */
 object Trace {
     /**
      * Checks whether the tracing library has been loaded and the app has been registered with