docs: def start(self) -> None:
          """
          Starts a subprocess. Optionally routes its output to our disk logs.
          """
          if self.running:
              return
          self.info("Starting: {} (with logs stdout={}, stderr={})".format(
              self.details.procargs,
              self.details.logfile_out,
              self.details.logfile_err))
          self.open_logs()
          creationflags = CREATE_NEW_PROCESS_GROUP if WINDOWS else 0
          # self.warning("creationflags: {}".format(creationflags))
          self.process = subprocess.Popen(self.details.procargs, stdin=None,
                                          stdout=self.stdout, stderr=self.stderr,
                                          creationflags=creationflags)
          self.running = True