private ColumnMapper<?> columnMapperFor(QualifiedType<?> type) {
        return columnMappers.computeIfAbsent(type, t ->
                ctx.findColumnMapperFor(t)
                        .orElseThrow(() -> new NoSuchMapperException("No column mapper registered for " + t)));
    }
Use a qualified column mapper to extract a type from the current ResultSet row.
@param <T> the type to map
@param column the column name
@param type the QualifiedType of the type
@return the materialized T
core/src/main/java/org/jdbi/v3/core/result/internal/RowViewImpl.java