Adds the node to a group. Groups are helpers to name and organize a subset of nodes, for example "enemies" or "collectables". A node can be in any number of groups. Nodes can be assigned a group at any time, but will not be added until they are inside the scene tree (see [method is_inside_tree]). See notes in the description, and the group methods in [SceneTree].
The [code]persistent[/code] option is used when packing node to [PackedScene] and saving to file. Non-persistent groups aren't stored.
[b]Note:[/b] For performance reasons, the order of node groups is [i]not[/i] guaranteed. The order of node groups should not be relied upon as it can vary across project runs.
</description>
</method>
<methodname="can_process"qualifiers="const">
@ -200,6 +201,7 @@
<returntype="Array"/>
<description>
Returns an array listing the groups that the node is a member of.
[b]Note:[/b] For performance reasons, the order of node groups is [i]not[/i] guaranteed. The order of node groups should not be relied upon as it can vary across project runs.