Panda Bullet

Using Panda Bullet, how can I set the CFM/ERP parameters of BulletConstraint()'s?

In C++ code

constraint->setParam(BT_CONSTRAINT_STOP_CFM, myCFMvalue, index)
constraint->setParam(BT_CONSTRAINT_STOP_ERP, myERPvalue, index)

How would one set those parameters in Panda Bullet? I looked at BulletConstraint’s API, as well as those who inherit from it (BulletHingeConstraint) and found no method to.

Thank you,
~powerpup118