1. @DomName('WebGL2RenderingContext.readBuffer')
  2. @DocsEditable()
  3. @Experimental()
void readBuffer(int mode)

Source 

@DomName('WebGL2RenderingContext.readBuffer')
@DocsEditable()
@Experimental() // untriaged
void readBuffer(int mode) => _blink.BlinkWebGL2RenderingContext.instance
    .readBuffer_Callback_1_(this, mode);