NOTE: Although it is possible to filter the process ID of an event when
the `pid` context has been added to its channel using, for example,
`$ctx.pid == 2832`, it is recommended to use the PID tracker instead,
NOTE: Although it is possible to filter the process ID of an event when
the `pid` context has been added to its channel using, for example,
`$ctx.pid == 2832`, it is recommended to use the PID tracker instead,