If I want to accurately simulate the capacitance loading / pass-through resistance of the analog mux for the caraval GPIO pins what parts of the GPIO do I need to simulate? The sky130_fd_io spice file has the GPIO split into a bunch of sub netlists that dont really match the documentation. My first guess is that I should be able to get away with just the "sky130_fd_io__gpiov2_amux" module, which should be the mux itself, but not model the added capacitance of the input buffer and disabled output buffer (but I guess that will be swamped by the pin / external capacitance anyways?)