* `command: my_command` : Gives the command to run.
* `wait: true/false` (optional, default false) if true, waits for the
command to finish (this wait is not interruptible by interrupt_wait)
* `command: my_command` : Gives the command to run.
* `wait: true/false` (optional, default false) if true, waits for the
command to finish (this wait is not interruptible by interrupt_wait)