A modify operation, part of a FindAndModify command
Update (part of a FindAndModify command).
Update (part of a FindAndModify command).
the modifier document.
the command result must be the new object instead of the old one.
if true, creates a new document if no document matches the query, or if documents match the query, findAndModify performs an update
(Since version 0.18.0) Use FindAndModifyCommand.FindAndModifyResult
(Since version 0.18.0) Use FindAndModifyCommand.UpdateLastError
Remove (part of a FindAndModify command).
(Since version 0.16.0) Internal: will be made private