hayanesuru

possibly related
https://raw.githubusercontent.com/Winds-Studio/Leaf/2f72924ec7b24b8574ba50470b4217af96bf9452/leaf-server/minecraft-patches/features/0275-fix-MC-298464.patch

public class CombatTracker {
    private final List<CombatEntry> entries = Lists.newArrayList();
}

public record CombatEntry(DamageSource source, float damage, @Nullable FallLocation fallLocation, float fallDistance) {
}

public class DamageSource {
    private final Holder<DamageType> type;
    private final Entity causingEntity;
    private final Entity directEntity;
    private final Vec3 damageSourcePosition;
}

public abstract class LivingEntity extends Entity implements Attackable, WaypointTransmitter {
    public void remove(Entity.RemovalReason removalReason) {
        if ((removalReason == Entity.RemovalReason.KILLED || removalReason == Entity.RemovalReason.DISCARDED)
            && this.level() instanceof ServerLevel serverLevel) {
            this.triggerOnDeathMobEffects(serverLevel, removalReason);
        }

        super.remove(removalReason);
        this.brain.clearMemories();
        // leak CombatTracker#entries ?
    }
}