Restore this node to its default state.
Source
void reset() {
bool hadInheritedMergeAllDescendantsIntoThisNode = _inheritedMergeAllDescendantsIntoThisNode;
_actions = 0;
_flags = 0;
if (hadInheritedMergeAllDescendantsIntoThisNode)
_inheritedMergeAllDescendantsIntoThisNodeValue = true;
_label = '';
_markDirty();
}