A subclass of java.nio.Charset for providing implementation of ICU's charset converters.
This API is used to convert codepage or character encoded data to and
from UTF-16.
ucnvmbcs.h
ICU conversion (.cnv) data file structure, following the usual UDataInfo
header.
Format version: 6.2
struct UConverterStaticData -- struct containing the converter name, IBM CCSID,
min/max bytes per character, etc.
see ucnv_bld.h
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The static data is followed by conversionType-specific data structures.
At the moment, there are only variations of MBCS converters.