How to ensure the displaced mesh is used

[keassyguang]

Hello MOOSE Community,

I'm developing a custom material class that inherits from ADMaterial. The coordinates of the current quadrature point will be used as a condition to assign a specific value to some created variables. What I want to know is whether the coordinates of _q_point[_qp](0), _q_point[_qp](1) and _q_point[_qp](2) return the displaced mesh or the undisplaced mesh. Since I need the coordinates of the quadrature point under the displaced mesh, what should I do to ensure that the displaced mesh is always used?