var camera = this camera.list[prosperon.DOC] = `Return an array of available camera device IDs. :return: An array of camera IDs, or undefined if no cameras are available. ` camera.open[prosperon.DOC] = `Open a camera device with the given ID. :param id: The camera ID to open. :return: A camera object on success, or throws an error if the camera cannot be opened. ` camera.name[prosperon.DOC] = `Return the name of the camera with the given ID. :param id: The camera ID to query. :return: A string with the camera's name, or throws an error if the name cannot be retrieved. ` camera.position[prosperon.DOC] = `Return the physical position of the camera with the given ID. :param id: The camera ID to query. :return: A string indicating the camera position ("unknown", "front", or "back"). ` return this;