default ColumnIdentifier<ENTITY> asColumnIdentifier(String columnId) {
        return ColumnIdentifier.of(
            getDbmsId(),
            getSchemaId(),
            getTableId(),
            columnId
        );
    }
Returns a {@link ColumnIdentifier} that represents a particular column in
this table.

@param columnId  the database id of the column
@return          the column identifier
runtime-parent/runtime-config/src/main/java/com/speedment/runtime/config/identifier/TableIdentifier.java