I am assuming it because F-280 left Turkey without it. While all other weapons were integrated already except for the SSMs. like main gun, SAMs, Smash guns.
So that's the only reason which made me assume it, otherwise I was expecting it to be fitted with Turkish CIWS like in istanbul class.
I was also thinking on apparently an unlikely choice that's type 1130 CIWS (not sure, even if its possible at first place, though it has independent radars so perhaps shouldn't be a prob.) Its China's latest gen CIWS, one of the fastest gun based CIWS currenly with 11K rpm. However, if RAM is available to PN then most obvious choice would be that one.