dev/core#2747 REF] Move all the generic functions to the parent

[eileenmcnaughton]

Overview

[REF] Move all the generic functions to the parent

Before

Both entity specific & generic functions on the specific class

After

All generic functions moved to parent

Technical Details

This is for clarity, note that I need agreement on
https://lab.civicrm.org/dev/core/-/issues/2745
to decide whether to keep 'getExposedFields' or not - hence
that is not moved at this stage

Comments

[civibot]

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[colemanw]

OK, I see that the parent class currently only has one child.