didFinishLayout method
Called at the end of layout to indicate that layout is now complete.
The firstIndex
argument is the index of the first child that was
included in the current layout. The lastIndex
argument is the index of
the last child that was included in the current layout.
Useful for subclasses that which to track which children are included in the underlying render tree.
Implementation
void didFinishLayout(int firstIndex, int lastIndex) { }