class java/util/IdentityHashMap
containsKey
 (Ljava/lang/Object;)Z
 (L0java/lang/Object;)Z
get
 (Ljava/lang/Object;)TV;
 (L0java/lang/Object;)T0V;
put
 (TK;TV;)TV;
 (TK;TV;)T0V;
putAll
 (Ljava/util/Map<+TK;+TV;>;)V
 (L1java/util/Map<+TK;+TV;>;)V
remove
 (Ljava/lang/Object;)TV;
 (L0java/lang/Object;)T0V;