Makes modifications to options.
Container for user-defined plugs. Nodes should never make their own plugs here, so users are free to do as they wish.
The processed output scene.
The on/off state of the node. When it is off, the node outputs the input scene unchanged.
The input scene
Ignores tweaks targeting missing options. When off, missing options cause the node to error.
The tweaks to be made to the options. Arbitrary numbers of user defined tweaks may be added as children of this plug via the user interface, or using the OptionTweaks API via python.