@Override
    public String toString() {
        SQLSerializer serializer = createSerializer();
        if (!batches.isEmpty() && batchToBulk) {
            serializer.serializeInsert(metadata, entity, batches);
        } else {
            serializer.serializeInsert(metadata, entity, columns, values, subQuery);
        }
        return serializer.toString();
    }
Execute the clause and return the generated keys as a ResultSet

@return result set with generated keys
querydsl-sql/src/main/java/com/querydsl/sql/dml/AbstractSQLInsertClause.java