1. @DomName('WebGL2RenderingContext.getFragDataLocation')
  2. @DocsEditable()
  3. @Experimental()
int getFragDataLocation(Program program, String name)

Source 

@DomName('WebGL2RenderingContext.getFragDataLocation')
@DocsEditable()
@Experimental() // untriaged
int getFragDataLocation(Program program, String name) =>
    _blink.BlinkWebGL2RenderingContext.instance
        .getFragDataLocation_Callback_2_(this, program, name);