ICallHooked<T extends IContext> constructor Null safety

1. nyxx_commands
2. nyxx_commands
3. ICallHooked<T extends IContext>
4. ICallHooked constructor

ICallHooked class

1. Constructors
2. ICallHooked
3. Properties
4. hashCode
5. onPostCall
6. onPreCall
7. runtimeType
8. Methods
9. noSuchMethod
10. toString
11. Operators
12. operator ==