private void extraInfo(final String formatter, final Object... args) {
        if (EXTRA_INFO) {
            System.out.println(String.format(formatter, args));
        }
    }
Queries the database for a list of ENUM constants belonging to the specified table and
column.

@param dbms           the dbms
@param table          the table
@param columnName     the column name
@return               list of enum constants.
@throws SQLException  if an error occured
runtime-parent/runtime-core/src/main/java/com/speedment/runtime/core/abstracts/AbstractDbmsMetadataHandler.java