driver-legacy/src/main/com/mongodb/BulkUpdateRequestBuilder.java
public void update(final DBObject update) {
        bulkWriteOperation.addRequest(new UpdateRequest(query, update, true, upsert, queryCodec, collation, arrayFilters));
    }
public void update(final DBObject update) {
        bulkWriteOperation.addRequest(new UpdateRequest(query, update, true, upsert, queryCodec, collation, arrayFilters));
    }
Adds a request to update all documents in the collection that match the query with which this builder was created.

@param update the update criteria