1. DomName('WebGL2RenderingContext.getInternalformatParameter')
  2. DocsEditable()
  3. Experimental()
Object getInternalformatParameter(int target, int internalformat, int pname)

Source 

@DomName('WebGL2RenderingContext.getInternalformatParameter')
@DocsEditable()
@Experimental() // untriaged
Object getInternalformatParameter(int target, int internalformat, int pname) => (_blink.BlinkWebGL2RenderingContext.instance.getInternalformatParameter_Callback_3_(this, target, internalformat, pname));