docs: public static int getDelimIndex(StringBuilder sb, int itemPos, char[] delims, boolean ignoreEmpty) {
  
  	if (StringUtil.isEmpty(sb)) return -1;
  
  	int curr = -1, listIndex = 0;
  	int len = sb.length();
  	for (int i = 0; i < len; i++) {
  	    if (contains(delims, sb.charAt(i))) {
  		curr = i;
  		if (ignoreEmpty) {
  		    if (i == 0 || (i + 1 < len && contains(delims, sb.charAt(i + 1)))) {
  			sb.delete(curr, curr + 1);
  			len--;
  			i--;
  			curr--;
  			continue;
  		    }
  		}
  		if (++listIndex == itemPos) break;
  	    }
  	}
  	if (listIndex < itemPos) return len;
  	return curr;
      }