}

	// reset calls, make the backend return success for three user tokens
	calledWithToken = []string{}
	resultUsers, resultOk, resultErr = map[string]user.Info{}, true, nil
	resultUsers["usertoken1"] = &user.DefaultInfo{Name: "user1"}
	resultUsers["usertoken2"] = &user.DefaultInfo{Name: "user2"}
	resultUsers["usertoken3"] = &user.DefaultInfo{Name: "user3"}

	// populate cache

  llvm::SmallDenseMap<int64_t, llvm::SmallVector<string, 4>> result;
  llvm::SmallDenseMap<int64_t, llvm::StringSet<>> result_sets;
  auto insert = [&](Value v, const string& source, const Block& func_block) {
    auto arg = v.dyn_cast<BlockArgument>();
    if (!arg || arg.getOwner() != &func_block) return;
    auto insert_res = result_sets[arg.getArgNumber()].insert(source);
    if (!insert_res.second) return;