ios - How to Change base url of subclassed AFHTTPRequestOperationManager? -

in application using afnetworking restful services. adviced in tutorial subclassed afhttprequestoperationmanager singleton class.

below implementation file

@implementation senetworkoperationmanager + (senetworkoperationmanager *)sharedsenetworkoperationmanagerwithurl:(nsurl *)url {     static senetworkoperationmanager *_sharedweatherhttpclient = nil;      static dispatch_once_t oncetoken;     dispatch_once(&oncetoken, ^{         _sharedhttpoperationclient = [[self alloc] initwithbaseurl:url];     });      return _sharedhttpoperationclient;  } - (instancetype)initwithbaseurl:(nsurl *)url {     self = [super initwithbaseurl:url];      if (self) {         self.responseserializer = [afjsonresponseserializer serializer];         self.requestserializer = [afjsonrequestserializer serializer];     }      return self; } 

but problem have change base url when need(we make our client type given base url)

help me if there solution changing base url.