1. @DomName('CanvasRenderingContext2D.createRadialGradient')
  2. @DocsEditable()
CanvasGradient createRadialGradient(num x0, num y0, num r0, num x1, num y1, num r1)

Source 

@DomName('CanvasRenderingContext2D.createRadialGradient')
@DocsEditable()
CanvasGradient createRadialGradient(
        num x0, num y0, num r0, num x1, num y1, num r1) =>
    _blink.BlinkCanvasRenderingContext2D.instance
        .createRadialGradient_Callback_6_(this, x0, y0, r0, x1, y1, r1);