Document null argument limitation with `SceneTree.call_group()`
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<description>
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Calls [code]method[/code] on each member of the given group. You can pass arguments to [code]method[/code] by specifying them at the end of the method call. This method is equivalent of calling [method call_group_flags] with [constant GROUP_CALL_DEFAULT] flag.
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[b]Note:[/b] [code]method[/code] may only have 5 arguments at most (7 arguments passed to this method in total).
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[b]Note:[/b] Due to design limitations, [method call_group] will fail silently if one of the arguments is [code]null[/code].
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[b]Note:[/b] [method call_group] will always call methods with an one-frame delay, in a way similar to [method Object.call_deferred]. To call methods immediately, use [method call_group_flags] with the [constant GROUP_CALL_REALTIME] flag.
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</description>
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</method>
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<description>
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Calls [code]method[/code] on each member of the given group, respecting the given [enum GroupCallFlags]. You can pass arguments to [code]method[/code] by specifying them at the end of the method call.
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[b]Note:[/b] [code]method[/code] may only have 5 arguments at most (8 arguments passed to this method in total).
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[b]Note:[/b] Due to design limitations, [method call_group_flags] will fail silently if one of the arguments is [code]null[/code].
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[codeblock]
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get_tree().call_group_flags(SceneTree.GROUP_CALL_REALTIME | SceneTree.GROUP_CALL_REVERSE, "bases", "destroy") # Call the method immediately and in reverse order.
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# Call the method immediately and in reverse order.
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get_tree().call_group_flags(SceneTree.GROUP_CALL_REALTIME | SceneTree.GROUP_CALL_REVERSE, "bases", "destroy")
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[/codeblock]
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</description>
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</method>
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