Returns the unique library named libraryName
if it exists.
If no unique library exists, an error is thrown.
external LibraryMirror findLibrary(Symbol libraryName);
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-mirrors/MirrorSystem/findLibrary.html