How to extract robot state information from demo.hdf5?

[Vhyrsd]

@amandlek We used python dataset_states_to_obs.py --dataset /path/to/demo.hdf5 --output_name low_dim.hdf5 --done_mode 2 to extract the observation data from the demo.hdf5 file. However, low_dim.hdf5 only contains the low dim data "object". How can we obtain the robot state information like "robot0_eef_pos" and "robot0_joint_pos"? Thank you so much!