code: @Override
  	public List<ScopDescription> filterByClassificationId(String query){
  
  		try {
  			ensureDesInstalled();
  		} catch (IOException e) {
  			throw new ScopIOException(e);
  		}
  
  		List<ScopDescription> matches = new ArrayList<ScopDescription>();
  		for (Integer i : sunidMap.keySet()){
  			ScopDescription sc = sunidMap.get(i);
  
  
  			if( sc.getClassificationId().startsWith(query)){
  				matches.add(sc);
  			}
  		}
  
  		return matches;
  	}
docs: /* (non-Javadoc)
  @see org.biojava.nbio.structure.scop.ScopDatabase#filterByClassificationId(java.lang.String)