@SuppressWarnings("unchecked")
    static <U> ColumnMapper<U> getDefaultColumnMapper() {
        return (r, n, c) -> (U) r.getObject(n);
    }
Maps result set columns to objects.

@param <T> The mapped type
@see ColumnMapperFactory
@see ColumnMappers
@see org.jdbi.v3.core.result.ResultBearing#map(ColumnMapper)
@see org.jdbi.v3.core.config.Configurable#registerColumnMapper(ColumnMapper)
@see org.jdbi.v3.core.config.Configurable#registerColumnMapper(java.lang.reflect.Type, ColumnMapper)
@see StatementContext#findColumnMapperFor(java.lang.reflect.Type)
core/src/main/java/org/jdbi/v3/core/mapper/ColumnMapper.java