1. @DomName('URLSearchParams.append')
  2. @DocsEditable()
  3. @Experimental()
void append(String name, String value)

Source

@DomName('URLSearchParams.append')
@DocsEditable()
@Experimental() // untriaged
void append(String name, String value) => _blink.BlinkURLSearchParams.instance
    .append_Callback_2_(this, name, value);