SubjectListRequested constructor Null safety

1. univalle_app
2. subjects
3. SubjectListRequested
4. SubjectListRequested constructor

SubjectListRequested class

1. Constructors
2. SubjectListRequested
3. Properties
4. hashCode
5. props
6. runtimeType
7. stringify
8. Methods
9. noSuchMethod
10. toString
11. Operators
12. operator ==