docs: protected static int computeLineNo(Node node) {
  		final int offset = node.getStartOffset();
  		final BasedSequence seq = node.getDocument().getChars();
  		int tmpOffset = seq.endOfLine(0);
  		int lineno = 1;
  		while (tmpOffset < offset) {
  			++lineno;
  			tmpOffset = seq.endOfLineAnyEOL(tmpOffset + seq.eolLength(tmpOffset));
  		}
  		return lineno;
  	}