Конструктор Base64Encoder.urlSafe

const Base64Encoder.urlSafe() : _urlSafe = true;

© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-convert/Base64Encoder/Base64Encoder.urlSafe.html