You can start the process with an explicit $start() call.
Alternatively it starts up at the first $url() or $get_port()
call.
local_app_process(app, ..., .local_envir = parent.frame())webfakes_app object, the web app to run.
Passed to new_app_process().
The environment to attach the process cleanup to. Typically a frame. When this frame finishes, the process is stopped.
new_app_process() for more details.