MongoDB\Driver\Monitoring\TopologyChangedEvent::getPreviousDescription
(mongodb >=1.13.0)
MongoDB\Driver\Monitoring\TopologyChangedEvent::getPreviousDescription — Returns the previous description for the topology
Description
Parameters
This function has no parameters.
Return Values
Returns the previous MongoDB\Driver\TopologyDescription for the topology.
Errors/Exceptions
- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.