Monitoring classes and subscriber functions MongoDB\Driver\Monitoring &Functions; &reference.mongodb.functions.driver.entities.monitoring; &reference.mongodb.mongodb.driver.monitoring.commandfailedevent; &reference.mongodb.mongodb.driver.monitoring.commandstartedevent; &reference.mongodb.mongodb.driver.monitoring.commandsucceededevent; &reference.mongodb.mongodb.driver.monitoring.commandsubscriber; &reference.mongodb.mongodb.driver.monitoring.subscriber;