@Override
    public RowMappers createCopy() {
        return new RowMappers(this);
    }
Obtain a row mapper for the given type in the given context.

@param type the target type to map to
@return a RowMapper for the given type, or empty if no row mapper is registered for the given type.
core/src/main/java/org/jdbi/v3/core/mapper/RowMappers.java