addHttpCall method
Add alice http call to calls subject
Implementation
void addHttpCall(AliceHttpCall aliceHttpCall) {
// assert(aliceHttpCall.request != null, "Http call request can't be null");
// assert(aliceHttpCall.response != null, "Http call response can't be null");
callsSubject.add([...callsSubject.value, aliceHttpCall].lock);
}