• all_object_names : remove_object , spawn_object
• exists : remove_object , spawn_object
• file_localition : spawn_object
• file_xml : spawn_object
• model : spawn_object
• model_type : spawn_object
• object_names : remove_object , spawn_object
• object_pose : spawn_object
• orientation : spawn_object
• p : spawn_object
• position : spawn_object
• quaternion : spawn_object
• req : remove_object , spawn_object
• res : remove_object , spawn_object
• srv_delete_model : remove_object , spawn_object
• srv_spawn_model : spawn_object
• xml_string : spawn_object