Japanese Encoding on File delimited Metadata (and others)?

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Japanese Encoding on File delimited Metadata (and others)?

Hi,
Wizards for some metadata such as File delimited and File Excel has the dropdown list to choose encoding. I don't see the encodings for Japanese such as Shift JIS (aka cp932), EUC_JP, ISO-2022-JP, etc. Is there a way to add those encodings by custom configuration, or is it something achievable only by TOS core?
Thanks,