converter.text
インタフェース 
TextConverter
クラス 
AbstractTextConverter
FullwidthLatin2Halfwidth
FullwidthNumber2Halfwidth
HalfwidthKana2Fullwidth
HalfwidthLatin2Fullwidth
HalfwidthNumber2Fullwidth
Hiragana2Katakana
Katakana2Hiragana
MappingConverter
MappingRegexConverter
PropertiesMappingConverter
PropertiesMappingRegexConverter
TextConvertUtility
列挙型 
TextConvertUtility.RunType