fun <P, M> Column.converter(modelClass: Class<M>, presentationClass: Class<P>, convert: (M, Locale) -> P): Converter<P, M>fun <P, M> Column.converter(modelClass: Class<M>, presentationClass: Class<P>, convert: (M) -> P): Converter<P, M>fun <P, M> Column.converter(converter: Converter<P, M>): Unit