Hi there, I am new to ChimeraX and its python API. As I was looking through the documentation, I noticed there were some atomic data classes (AtomicStructure, Atom, Atoms, Residue). Say I have a PDB file with information about all the atoms in the model, am I able to simply create Atom objects from reading the PDB file and, consequently, add these Atom objects to an AtomicStructure object? The reason I want to do this is because I want to use the fitmap function while limiting any disk IO. So, opening the file in ChimeraX (even if using the no gui offscreen functionality) would not work. I thought of simply creating objects from scratch, but I am running into errors when instantiating them. Sorry if this is an obscure problem or if I was unclear. Thanks for your help! Best, Nikhil