CLASS net/minecraft/class_7638 net/minecraft/network/message/AcknowledgmentValidator
	COMMENT A class that validates the clients' message acknowledgment.
	COMMENT
	COMMENT <p>When clients receive or send messages, they send "acknowledgments" to the server,
	COMMENT containing messages they've last seen or received. If there are too many messages
	COMMENT waiting for message acknowledgments (more than {@value
	COMMENT net.minecraft.server.network.ServerPlayNetworkHandler#MAX_PENDING_ACKNOWLEDGMENTS}),
	COMMENT or if the acknowledgment is incorrect, the client will be disconnected.
	FIELD field_40680 size I
	FIELD field_40681 messages Lit/unimi/dsi/fastutil/objects/ObjectList;
	FIELD field_40682 lastSignature Lnet/minecraft/class_7469;
	METHOD <init> (I)V
		ARG 1 size
	METHOD method_44989 addPending (Lnet/minecraft/class_7469;)V
		ARG 1 signature
	METHOD method_46268 getMessageCount ()I
	METHOD method_46269 removeUntil (I)Z
		ARG 1 index
	METHOD method_46270 validate (Lnet/minecraft/class_7635$class_7636;)Ljava/util/Optional;
		ARG 1 acknowledgment