Arms the log for this process. Cheap and side-effect free when disabled (the directory is only created on the first actual write), so it is safe to call unconditionally at startup.
the file records will be appended to, or null when logging is off.
null
Arms the log for this process. Cheap and side-effect free when disabled (the directory is only created on the first actual write), so it is safe to call unconditionally at startup.