Adds a retrieve request to the BatchRequest class.
NSError *error = nil;
[RequestBuilder enableXCSRF:YES];
id<Requesting> request = [RequestBuilder requestWithURL:[[NSURL alloc] initWithString:"TravelagencyCollection"]];
[request setRequestMethod:@"GET"];
BatchRequest *batch = [[BatchRequest alloc] initWithURL:[[NSURL alloc] initWithString:[NSString stringWithFormat:@"%$batch",applicationEndpoint]]];
[batch setUsername:user];
[batch setPassword:pass];
[batch addRetrieveRequestToBatch:request withError:&error];
if(!error){
[batch startSynchronous];
}