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Composition

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Not at all. The ~~core issue~~ is ~~that~~ ~~two~~ ~~concerns~~ ~~have~~ ~~been~~ ~~mixed~~ ~~together,~~ ~~making~~ ~~things~~ ~~compound~~.

Not at all. The pattern is not the problem; what the parent class exposes to its subclasses is.

To put it more precisely, ~~the intent would~~ be ~~something~~ ~~like~~ the following.

To put it more precisely, it comes down to the following.