1. DomName('SourceBuffer.remove')
  2. DocsEditable()
  3. Experimental()
void remove(num start, num end)

Source 

@DomName('SourceBuffer.remove')
@DocsEditable()
@Experimental() // untriaged
void remove(num start, num end) => _blink.BlinkSourceBuffer.instance.remove_Callback_2_(unwrap_jso(this), start, end);