1. @DomName('WebGLRenderingContext.stencilFunc')
  2. @DocsEditable()
void stencilFunc(int func, int ref, int mask)

Source 

@DomName('WebGLRenderingContext.stencilFunc')
@DocsEditable()
void stencilFunc(int func, int ref, int mask) =>
    _blink.BlinkWebGLRenderingContext.instance
        .stencilFunc_Callback_3_(this, func, ref, mask);