createRenderBox method
Implementation
RenderTextControlLeaderLayer createRenderBox() {
RenderEditable renderEditable = createRenderEditable();
renderTextControlLeaderLayer = RenderTextControlLeaderLayer(
link: _toolbarLayerLink,
child: renderEditable,
scrollable: _scrollable,
isMultiline: isMultiline,
);
return renderTextControlLeaderLayer!;
}