CLASS none/km net/minecraft/entity/tracker/DataTracker
	FIELD a LOGGER Lorg/apache/logging/log4j/Logger;
	FIELD b trackedEntities Ljava/util/Map;
	FIELD c trackedEntity Lnone/se;
	FIELD e lock Ljava/util/concurrent/locks/ReadWriteLock;
	METHOD a registerData (Ljava/lang/Class;Lnone/kk;)Lnone/kj;
	METHOD a startTracking (Lnone/kj;Ljava/lang/Object;)V