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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_atoms(self, ligands=True, pseudo_group=False, inc_alt_states=False):
 """ Flat list of all the `Atoms` in the `Assembly`. Parameters ligands : bool, optional Include ligand `Atoms`. pseudo_group : bool, optional Include pseudo_group `Atoms`. inc_alt_states : bool, optional Include alternate sidechain conformations. Returns ------- atoms : itertools.chain All the `Atoms` as a iterator. """

        atoms = itertools.chain(
            *(list(m.get_atoms(inc_alt_states=inc_alt_states))
                for m in self.get_monomers(ligands=ligands,
                                           pseudo_group=pseudo_group)))
        return atoms