Inquiry About get_jacobian() Function in URScript

I have discovered that in PolyScope version 5.16 and above, the URScript function get_jacobian() appears to be available. Using it as shown below seems to return a 6x6 Jacobian matrix at the current joint positions:​

joint_positions = get_actual_joint_positions()
jacobian = get_jacobian(joint_positions)

This function is not documented in the official URScript manuals, suggesting it might be an undocumented internal function. I would like to inquire if anyone has information about this function, its intended use, and whether it is officially supported.​

Additionally, are there any official alternatives for obtaining the Jacobian matrix, such as through RTDE or other interfaces?​

It would be helpful to know if this function is intended for public use or if there are plans to officially support or deprecate it in future releases.