// iOpening, iClosing = position of () brackets
static LS tok_makeArgumentsFinal(LS tok, int iOpening, int iClosing) {
  Map<Int> bracketMap = getBracketMapIncludingAngleBrackets(tok, iOpening+2, iClosing);
  bool change = false;
  int i = iOpening+2;
  while (i < iClosing) {
    if (neqGet(tok, i, "final")) { tokPrepend(tok, i, "final "); set change; }
    while (i < iClosing && neqGet(tok, i, ","))
      i = or(bracketMap.get(i), i)+2;
    i += 2;
  }
  if (change) reTok(tok, iOpening, iClosing);
  ret tok;
}

Began life as a copy of #1020910