1. DomName('WebGL2RenderingContext.getIndexedParameter')
  2. DocsEditable()
  3. Experimental()
Object getIndexedParameter(int target, int index)

Source 

@DomName('WebGL2RenderingContext.getIndexedParameter')
@DocsEditable()
@Experimental() // untriaged
Object getIndexedParameter(int target, int index) => (_blink.BlinkWebGL2RenderingContext.instance.getIndexedParameter_Callback_2_(this, target, index));