svoid test_indicesOfTokenPredicateSequence() {
  assertEqualsVerbose(ll(1, 5), indicesOfTokenPredicateSequence(javaTok("a 1 b 2"), ll(f isIdentifier, f isInteger)));
  assertEqualsVerbose(ll(1), indicesOfTokenPredicateSequence(javaTok("a 1 b b"), ll(f isIdentifier, f isInteger)));
}