1. @DomName('WebGL2RenderingContext.clearBufferfi')
  2. @DocsEditable()
  3. @Experimental()
void clearBufferfi(int buffer, int drawbuffer, num depth, int stencil)

Source 

@DomName('WebGL2RenderingContext.clearBufferfi')
@DocsEditable()
@Experimental() // untriaged
void clearBufferfi(int buffer, int drawbuffer, num depth, int stencil) =>
    _blink.BlinkWebGL2RenderingContext.instance
        .clearBufferfi_Callback_4_(this, buffer, drawbuffer, depth, stencil);