42a43
> class sc_interface;
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>
> public:
> // Should be "implementation defined" but used in the tests.
> virtual const sc_event &find_event(sc_interface *if_p=NULL) const = 0;
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>
> const sc_event &
> find_event(sc_interface *if_p=NULL) const override
> {
> warn_unimpl(__PRETTY_FUNCTION__);
> return *(const sc_event *)nullptr;
> }