protected $output;
/**
- * @param BatchRowIterator $reader Iterator that returns an
+ * @param BatchRowIterator $reader Iterator that returns an
* array of database rows
- * @param BatchRowWriter $writer Writer capable of pushing
+ * @param BatchRowWriter $writer Writer capable of pushing
* row updates to the database
* @param RowUpdateGenerator $generator Generates single row updates
* based on the rows content