1. @DomName('WebGL2RenderingContext.createTransformFeedback')
  2. @DocsEditable()
  3. @Experimental()
TransformFeedback createTransformFeedback()

Source 

@DomName('WebGL2RenderingContext.createTransformFeedback')
@DocsEditable()
@Experimental() // untriaged
TransformFeedback createTransformFeedback() =>
    _blink.BlinkWebGL2RenderingContext.instance
        .createTransformFeedback_Callback_0_(this);