Comments regarding BossEventPacket are outdated

[inxomnyaa]

Protocol/bedrock/bedrock-common/src/main/java/com/nukkitx/protocol/bedrock/packet/BossEventPacket.java

Lines 47 to 61 in 0358afc

	/**
	* Appears not to be implemented. Currently bar percentage only appears to change in response to the target entity's health.
	*/
	UPDATE_PERCENTAGE,
	/**
	* Also appears to not be implemented. Title clientside sticks as the target entity's nametag, or their entity transactionType name if not set.
	*/
	UPDATE_NAME,
	/**
	* Darken the sky when the boss bar is shown.
	*/
	UPDATE_PROPERTIES,
	/**
	* Not implemented :( Intended to alter bar appearance, but these currently produce no effect on clientside whatsoever.
	*/

Over the time (especially with 1.18) some of those fields have been implemented.
The gophertunnel docs are partially updated:
https://github.com/Sandertv/gophertunnel/blob/0de533a5e490f127330818ffba2c96b93b813e69/minecraft/protocol/packet/boss_event.go#L42-L59
I can confirm that the title and health percentage properties are working if the BossEntityUniqueID equals the player's UUID, i have not been able to test if they work with an actual entity yet though.

[SupremeMortal]

Will look into updating the docs for 3.0.0