static int ai_forgetAllHttpRequests(S path) {
  new L<TripleWeb> toInvalidate;
  for (TripleWeb w : ai_triplesWithB("was for path"))
    if (isCIPrefixPlusGlobalID(w.a, "HTTP request "))
      toInvalidate.addAll(triplesWithA(w.a));
  ai_removeTriplesInMemory(toInvalidate);
  ret l(toInvalidate);
}