Open a Latin version of an Italian metropolis (10)

I believe the answer is:

neapolitan

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'open a latin version of an italian metropolis' is the definition.
I can't tell whether this defines the answer.

'open a latin version of' is the wordplay.
'version of' indicates anagramming the letters.
'open'+'a'+'latin'='openalatin'
'openalatin' is an anagram of 'NEAPOLITAN'.

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(Other definitions for neapolitan that I've seen before include "21 [ITALIAN]" , "Italian native" , "chocolate" , "Three-coloured ice cream" , "Italian citizen" .)

I've seen this clue in the Sydney Morning Herald.

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