Revolute Joint for Rigidbody2D

Hello,

I am looking for how to create a Revolute Joint using the new Physics 2D. For an example of how a revolute joint behaves:

http://blog.allanbishop.com/box2d-2-1a-tutorial-part-2-joints/

Essentially, I would like to freeze the position of my rigidbody, but not freeze the rotation.

Thanks!

I think you are looking for hinge joint