BuildInfo is a result of a BuildInfo command.

CreateIndexes is a result of a CreateIndexes command.

Delete is a result from a Delete command.

Distinct is a result from a Distinct command.

FindAndModify is a result from a findAndModify command.

GetLastError is a result of a GetLastError command.

Insert is a result from an Insert command.

IsMaster is a result of an IsMaster command.

KillCursors is a result of a KillCursors command.

ListDatabases is the result from a listDatabases command.

Update is a result of an Update command.

WriteConcernError is an error related to a write concern.

WriteError is an error from a write operation that is not a write concern error.