allowsUri abstract method
bool allowsUri(Checks if the uri is allowed on the specified attribute.
The uri provided may or may not be a relative path.
Source
bool allowsUri(String uri);
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-html/UriPolicy/allowsUri.html