public String registerColumnOverride(String table, String oldColumn, String newColumn) {
        Map<String, String> columnOverrides = tableColumns.computeIfAbsent(table, k -> new HashMap<String, String>());
        return columnOverrides.put(oldColumn, newColumn);
    }
{@link NameMapping} implementation that allows specifying exact schema, table and column name mappings.
querydsl-sql/src/main/java/com/querydsl/sql/namemapping/PreConfiguredNameMapping.java