The content will be clipped (or not) according to this option.
See the enum Clip for details of all possible options and their common use cases.
Defaults to Clip.none, and must not be null.
@override Clip get clipBehavior => _clipBehavior;
@override set clipBehavior(Clip value) { assert(value != null); if (value != _clipBehavior) { _clipBehavior = value; markNeedsPaint(); markNeedsSemanticsUpdate(); } }