static L<ParsedWithTokens<S>> pwt_initial(S s) {
  ret pwt_initial(javaTok(s));
}

// maxTokens = how many code tokens per range (max)
static L<ParsedWithTokens<S>> pwt_initial(LS tok, int maxTokens) {
  ret concatMap(lai_codeTokens(tok), lai -> pwt_followingTokens(1, maxTokens, lai));
}