{

public:

Environment() { }

void addClient(EnvironmentClient *client)

{

this->clients.push_back(client);

}

Strings call(const String &key, const Strings &values)

{

for (auto client : this->clients)

{

if (client->respondsToKey(key))

{

return client->call(key, values);

}

}

printf("Environment. No one found to respond to key '%s'\n", key.c_str());

Strings stub;

return stub;

}

private:

std::vector<EnvironmentClient *> clients;