public ColumnMappers register(QualifiedColumnMapperFactory factory) {
        factories.add(0, factory);
        cache.clear();
        return this;
    }
Register a qualified column mapper factory.
<p>
Column mappers may be reused by {@link RowMapper} to map individual columns.

@param factory the qualified column mapper factory
@return this
core/src/main/java/org/jdbi/v3/core/mapper/ColumnMappers.java