def set_chain_info(self, chain_id, chain_name, num_groups):
self.chain_id_list.append(chain_id)<EOL>self.chain_name_list.append(chain_name)<EOL>self.groups_per_chain.append(num_groups)<EOL>
Set the chain information.
        :param chain_id: the asym chain id from mmCIF
        :param chain_name: the auth chain id from mmCIF
        :param num_groups: the number of groups this chain has