+'ApiMaxLagInfo': When lag information is being requested via API. Use this to
+override lag information. Generally a hook function should only replace
+$lagInfo if the new $lagInfo['lag'] is greater than the current $lagInfo['lag'].
+&$lagInfo: Maximum lag information array. Fields in the array are:
+ 'lag' is the number of seconds of lag.
+ 'host' is the host name on which the lag exists.
+ 'type' is an indication of the type of lag,
+ e.g. "db" for database replication lag or "jobqueue" for job queue size
+ converted to pseudo-seconds.
+ It is possible to add more fields and they will be returned to the user in
+ the API response.
+