#202 Concept of abstract classes

[Burkhard Schmidt]

From https://de.mathworks.com/help/matlab/matlab_oop/abstract-classes-and-interfaces.html

Abstract classes are useful for describing functionality that is common to a group of classes, but requires unique implementations within each class.

An abstract class serves as a basis (that is, a superclass) for a group of related subclasses. An abstract class can define abstract properties and methods that subclasses implement. Each subclass can implement the concrete properties and methods in a way that supports their specific requirements.

[Burkhard Schmidt]

First: to be used for generic template for WavePacket main classes, see also ticket #201

• ket
• rho
• traj
• wave
• all SHT variants

[Burkhard Schmidt]

Later: Also to be used for many other classes where there is a generic classdef available, such as:

• grid
• amo
• dip
• pol
• efi
• pot
• kin
• nip
• sbc
• vis