common: Adds get<> accessor functions for getting stored  NS(Object) elements
common: Adds get<> accessor functions for getting stored  NS(Object) elements

If an element provides a specialiation of the ObjectTypeTraits<> template
traits class *AND* the standard memory decorators are used, then the
defined get<> functions can be used to quickly access a pointer to a stored
element on a given buffer.

In case any of the constraints and requirements are not met, a nullptr is returned

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