how to fetch album through facebook display in uicollectionview by objective c

FBSDKGraphRequest *request = [[FBSDKGraphRequest alloc]
                               initWithGraphPath:@"/{album-id}/photos"
                                      parameters:params
                                      HTTPMethod:@"GET"];
[request startWithCompletionHandler:^(FBSDKGraphRequestCoection *coection,
                                      id result,
                                      NSError *error) {
}];