Resolve an ISO 3166-1 alpha-2 code to the IMF country code.
Applies IMF_COUNTRY_CODE_OVERRIDES first so IMF-specific
overrides win, then falls back to the EU alpha-3 map, then returns
null when the code is not recognised.
Parameters
iso2Code: string
Country ISO 3166-1 alpha-2 code (case-insensitive).
Resolve an ISO 3166-1 alpha-2 code to the IMF country code.
Applies IMF_COUNTRY_CODE_OVERRIDES first so IMF-specific overrides win, then falls back to the EU alpha-3 map, then returns
nullwhen the code is not recognised.