1. @DomName('DataTransfer.getData')
  2. @DocsEditable()
  3. @Experimental()
String getData(String format)

Source 

@DomName('DataTransfer.getData')
@DocsEditable()
@Experimental() // untriaged
String getData(String format) =>
    _blink.BlinkDataTransfer.instance.getData_Callback_1_(this, format);