regions property
The navigation regions contained in the file. The regions are sorted by their offsets. Each navigation region represents a list of targets associated with some range. The lists will usually contain a single target, but can contain more in the case of a part that is included in multiple libraries or in Dart code that is compiled against multiple versions of a package. Note that the navigation regions that are returned do not overlap other navigation regions.
Implementation
List<NavigationRegion> regions;