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);