1. DomName('WebGL2RenderingContext.stencilFuncSeparate')
  2. DocsEditable()
  3. Experimental()
void stencilFuncSeparate(int face, int func, int ref, int mask)

Source 

@DomName('WebGL2RenderingContext.stencilFuncSeparate')
@DocsEditable()
@Experimental() // untriaged
void stencilFuncSeparate(int face, int func, int ref, int mask) => _blink.BlinkWebGL2RenderingContext.instance.stencilFuncSeparate_Callback_4_(this, face, func, ref, mask);