This operation is not supported by an unmodifiable list.
void add(E value) { throw new UnsupportedError("Cannot add to an unmodifiable list"); }
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-typed_data/UnmodifiableInt64ListView/add.html