1. DomName('SVGTextContentElement.selectSubString')
  2. DocsEditable()
void selectSubString(int charnum, int nchars)

Source 

@DomName('SVGTextContentElement.selectSubString')
@DocsEditable()
void selectSubString(int charnum, int nchars) => _blink.BlinkSVGTextContentElement.instance.selectSubString_Callback_2_(this, charnum, nchars);