To automatically generate UML class diagrams for all modules in the package:
pyreverse -o pdf /home/abel/projects/personal_ws/src/hri_predict_ros/src/hri_predict /home/abel/projects/personal_ws/src/hri_predict_ros/src/hri_predict_ros -d /home/abel/projects/personal_ws/src/hri_predict_ros/doc -p "rosWrapper"
https://www.stereolabs.com/docs/body-tracking
rosbag play --clock filename.bag -r playback_factor