(mongodb >=1.4.0)
MongoDB\Driver\Session::advanceOperationTime — Advances the operation time for this session
$operationTime): voidAdvances the operation time for this session. If the operation time is less than or equal to the session's current operation time, this function is a no-op.
By using this method in conjunction with MongoDB\Driver\Session::advanceClusterTime() to copy the operation and cluster times from another session, you can ensure that operations in this session are causally consistent with the last operation in the other session.
operationTimeThe operation time is a logical timestamp. Typically, this value will be obtained by calling MongoDB\Driver\Session::getOperationTime() on another session object.
No value is returned.