static LL<S> tok_splitJavaStatements(L<S> tok) {
  int i = 1;
  new LL<S> out;
  while (i < l(tok)) {
    int j = tok_findEndOfStatement(tok, i);
    out.add(subList(tok, i-1, j+1));
    i = max(j+1, i+2);
  }
  ret out;
}