@Override
    public TupleMappers setValueColumn(String valueColumn) {
        return setColumn(VALUE_COLUMN_TUPLE_INDEX, valueColumn);
    }
Mappers similar to {@link org.jdbi.v3.core.mapper.MapEntryMappers} but map entries in vavr are in fact
of type {@link io.vavr.Tuple2}.
vavr/src/main/java/org/jdbi/v3/vavr/TupleMappers.java