stub method
void
stub(})
Makes the request METHOD url (for example
POST https://example.com/upload) answer with status, body and
headers. A later stub for the same request wins.
Implementation
void stub(
String request, {
int status = 200,
String body = '',
Map<String, String> headers = const {},
}) {
_stubs[request] = _Stub(status, body, headers);
}