1. DomName('SVGTextContentElement.getCharNumAtPosition')
  2. DocsEditable()
int getCharNumAtPosition(Point point)

Source 

@DomName('SVGTextContentElement.getCharNumAtPosition')
@DocsEditable()
int getCharNumAtPosition(Point point) => _blink.BlinkSVGTextContentElement.instance.getCharNumAtPosition_Callback_1_(this, point);