isTopLevel property
Whether this declaration is top-level.
A declaration is considered top-level if its owner is a LibraryMirror.
Implementation
bool get isTopLevel;© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-mirrors/DeclarationMirror/isTopLevel.html