code: private void handleSequenceLine(String line) throws ParserException {
  		String[] lineContent = line.split("\\s+");
  		if (lineContent.length != 2) {
  			throw new ParserException("Could not split sequence line into sequence name and sequence:\n" + line);
  		}
  		stockholmStructure.appendToSequence(lineContent[0], lineContent[1]);
  	}
docs: Handles a line that corresponds to a sequence. <br>
  e.g.: COATB_BPIKE/30-81 AEPNAATNYATEAMDSLKTQAIDLISQTWPVVTTVVVAGLVIRLFKKFSSKA<br>
  N.B.: This function can't tolerate sequences with intrinsic white space.
  
  @param line
  the line to be parsed
  @throws Exception