A subclass inherits everything that parent class has. Why do you need to copy anything?

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>In the child class I can't copy members of a parent class, fine, I go to the parent class and copy the members from there and paste them in the child class. That is the workaround that works, but I am not going to copy these members outside of the class then too why does it stop me?
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>Is there is builder / utility that does this?
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>Thanks.