2 OOP in Maple

2.1 How to use new object method calling in Maple 2021?
2.2 How to make a constructor for an Object?
2.3 How to make different constructors for an Object?
2.4 How to do OOP inheritance?
2.5 How to extend a base class and override its method with different one?
2.6 How to extend a class and call base class function from the extended class??
2.7 How to use object as user defined record inside a proc?
2.8 How to make copy of list of objects?
2.9 How to use OOP to implement ode solver?
2.10 How to make a complete OOP ode solver in Maple?