Particle Mechanical Model in pybamm

[strongcocoatea]

Thank you to the Pybamm developers and users.

I have some questions.

1. I saw a pybamm news that it is possible to simulate the mechanical model with particle size distribution. You gave a code example based on MPM. I understood the MPM was upgraded from SPM, right? I would like to simulate the mechanical model with particle size distribution on the DFN model. Is it possible at pybamm?
2. I guessed your mechanical model had the same or similar equations in the submodel "Swelling only Model", right?
3. I read a reference paper of the Swelling Only Model. I understood that we can simulate the particle expansion and the change of electrode thickness as a function of time, right?

Your knowledge share will be very valuable to me.