code: private void addChainFlattened(Structure s, Chain newChain, String transformId) {
  		newChain.setId(newChain.getId()+SYM_CHAIN_ID_SEPARATOR+transformId);
  		newChain.setName(newChain.getName()+SYM_CHAIN_ID_SEPARATOR+transformId);
  		s.addChain(newChain);
  	}
docs: Adds a chain to the given structure to form a biological assembly,
  adding the symmetry-expanded chains as new chains with renamed
  chain ids and names (in the form originalAsymId_transformId and originalAuthId_transformId).
  @param s
  @param newChain
  @param transformId