1. access_control_matrix
2. access_control_matrix
3. AccessControlMatrix
4. addSubject method

AccessControlMatrix class

1. Constructors
2. AccessControlMatrix
3. Properties
4. hashCode
5. objects
6. runtimeType
7. subjects
8. Methods
9. addObject
10. addObjects
11. addSubject
12. addSubjects
13. noSuchMethod
14. printAcm
15. printUsers
16. removeObject
17. removeSubject
18. removeSubjectById
19. toString
20. Operators
21. operator ==

void addSubject(AcmSubject subject) => _subjects.add(subject);