io.ktor.util.collections.CopyOnWriteHashMap -> wc1:
# {"id":"sourceFile","fileName":"CopyOnWriteHashMap.kt"}
    1:10:void <clinit>():0:0 -> <clinit>
    1:3:void <init>():17:17 -> <init>
    4:8:void <init>():19:19 -> <init>
    1:9:java.lang.Object get(java.lang.Object):44:44 -> a
