1. @DomName('WebGL2RenderingContext.getSyncParameter')
  2. @DocsEditable()
  3. @Experimental()
Object getSyncParameter(Sync sync, int pname)

Source 

@DomName('WebGL2RenderingContext.getSyncParameter')
@DocsEditable()
@Experimental() // untriaged
Object getSyncParameter(Sync sync, int pname) =>
    (_blink.BlinkWebGL2RenderingContext.instance
        .getSyncParameter_Callback_2_(this, sync, pname));