code: public Structure parsePDBFile(InputStream inStream)
  			throws IOException
  	{
  
  		BufferedReader buf = getBufferedReader(inStream);
  
  		return parsePDBFile(buf);
  
  	}
docs: Parse a PDB file and return a datastructure implementing
  PDBStructure interface.
  
  @param inStream  an InputStream object
  @return a Structure object
  @throws IOException