According to the update tutorial to replace one:

db[this->id()].replace_one(filter_builder.view(), bsb_file_blueprint.view());

It goes on to state:

By specifying the upsert option to true, the update operation either updates matching document(s) or inserts a new document if no matching document exists.

referring me to the C++11 documentation but without an example.

I have (using the bulk_write.cpp example):

{{mongocxx::model::replace_one upsert_op(filter_builder.view(), bsb_file_blueprint.view());
upsert_op.upsert(true);}}

But I'm unsure what to do next. Am I to do a bulk_write? Is there an easier way?