docs: def from_project_file(controller, project_file, track_path=None, log_level=logging.ERROR):
          """Create rocket instance using project file connector"""
          rocket = Rocket(controller, track_path=track_path, log_level=log_level)
          rocket.connector = ProjectFileConnector(project_file,
                                                  controller=controller,
                                                  tracks=rocket.tracks)
          return rocket