When use_nationalized_character_data is set to true, national character types are not used.
Going to need a test case showing this. I have tests already showing this works, so need to see the difference.
Added the test file.. varchar is generated instead of nvarchar.
Gah, silly miss. I missed initializing the "building option" for using nationalized character data from this setting. I will fix that. In the meantime, the API call will fix that. Change your call to build the Metadata to route through MetadataBuilder explicitly and call MetadataBuilder#enableGlobalNationalizedCharacterDataSupport(true). That building option should get initialized from the config setting map, but was not.