initWithCapacity method
initWithCapacity:
Implementation
objc.NSMutableString initWithCapacity(DartNSUInteger capacity) {
final _ret = _objc_msgSend_14hpxwa(
this.ref.retainAndReturnPointer(),
_sel_initWithCapacity_,
capacity,
);
return objc.NSMutableString.castFromPointer(
_ret,
retain: false,
release: true,
);
}