withPreprocessor
fun <J, D> JdbcToDataFrameConverter<J, *, *>.withPreprocessor(preprocessedValueType: KType, canIntroduceNulls: Boolean = false, valuePreprocessor: DbValuePreprocessor<J, D>?): JdbcToDataFrameConverter<J, D, D>
inline fun <J, reified D> JdbcToDataFrameConverter<J, *, *>.withPreprocessor(canIntroduceNulls: Boolean = false, valuePreprocessor: DbValuePreprocessor<J, D>?): JdbcToDataFrameConverter<J, D, D>