[self activeclients addObject:client] => [self syncAddClient:client] and [self activeclients removeObject] => [self syncRemoveClient:client]
[self activeclients addObject:client] => [self syncAddClient:client] and [self activeclients removeObject] => [self syncRemoveClient:client]

AppBlade/AppBladeSDK,FiftyThree/SDK,Thought-Technology-Ltd/AppBladeSDK,AppBlade/AppBladeSDK,AppBlade/AppBladeSDK,Thought-Technology-Ltd/AppBladeSDK,FiftyThree/SDK,AppBlade/AppBladeSDK,Thought-Technology-Ltd/AppBladeSDK,FiftyThree/SDK,FiftyThree/SDK,FiftyThree/SDK,Thought-Technology-Ltd/AppBladeSDK,FiftyThree/SDK