owner property
A mirror on the owner of this Dart language entity.
The owner is the declaration immediately surrounding the reflectee:
- For a library, the owner is 
null. - For a class declaration, typedef or top level function or variable, the owner is the enclosing library.
 - For a mixin application 
S with M, the owner is the owner ofM. - For a constructor, the owner is the immediately enclosing class.
 - For a method, instance variable or a static variable, the owner is the immediately enclosing class, unless the class is a mixin application 
S with M, in which case the owner isM. Note thatMmay be an invocation of a generic. - For a parameter, local variable or local function the owner is the immediately enclosing function.
 
Implementation
DeclarationMirror? get owner;
    © 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
    https://api.dart.dev/stable/2.13.0/dart-mirrors/DeclarationMirror/owner.html