introduceAsSibling method
Implementation
void introduceAsSibling(String navigation, CupertinoStackViewState cupertinoStackViewState) {
if (_isSiblingMapped(navigation)) {
_siblingMap.firstWhere((_ListPair navigationStackStatePair) => navigationStackStatePair._navigation == navigation)._cupertinoStackViewState = cupertinoStackViewState;
} else {
_siblingMap.insert(0, _ListPair(navigation, cupertinoStackViewState));
}
}