1. @DomName('WebGL2RenderingContext.getQueryParameter')
  2. @DocsEditable()
  3. @Experimental()
Object getQueryParameter(Query query, int pname)

Source 

@DomName('WebGL2RenderingContext.getQueryParameter')
@DocsEditable()
@Experimental() // untriaged
Object getQueryParameter(Query query, int pname) =>
    (_blink.BlinkWebGL2RenderingContext.instance
        .getQueryParameter_Callback_2_(this, query, pname));