svoid test_tok_scanTypeArgs() {
  LS tok = javaTok("A<B>");
  assertEqualsVerbose("<B>", tok_scanTypeArgs(tok, indexOf(tok, "<")));
  tok = javaTok("A<B, C> d");
  assertEqualsVerbose("<B, C>", tok_scanTypeArgs(tok, indexOf(tok, "<")));
  tok = javaTok("A B E");
  assertEqualsVerbose("", tok_scanTypeArgs(tok, indexOf(tok, "E")));
}