service_start: "/external_process/trigger_detecting" #required if service_req is true
service_start_msg: "" #optional if there is any particular msg needs to sent or else empty string
service_stop: "/external_process/stop_detecting" #required if service_req is true
service_start_msg: "" #optional if there is any particular msg needs to sent or else empty string
#launch_package: "yocs_velocity_smoother" #required if launch_req is true
#launch_file: "standalone.launch" #required if launch_req is true
#launch_nodes: "/nodelet_manager /velocity_smoother" #required if launch_req is true
topic_process_cancel: "external_process/cancel_publish"