public C addBatch() {
        batches.add(metadata);
        metadata = new DefaultQueryMetadata();
        metadata.addJoin(JoinType.DEFAULT, entity);
        metadata.setValidatingVisitor(validatingVisitor);
        return (C) this;
    }
Add current state of bindings as a batch item

@return the current object
querydsl-sql/src/main/java/com/querydsl/sql/dml/AbstractSQLDeleteClause.java