represents a single Dart file located in the ./lib directory of the containing package
libraries that are spread over multiple files using the part of directive are currently not supported
is realized as an extension of the matching :File:Local node
Properties
Name
Description
fqn
Fully qualified name of the library. Uses the package FQN and a path relative to the ./lib directory of the package (e.g. package:my_package/my_lib.dart)