@interface NAScheduler : NSObject + (id)mainThreadScheduler; + (id)serialDispatchQueueSchedulerWithName:(id)a0; + (id)operationQueueSchedulerWithMaxConcurrentOperationCount:(unsigned long long)a0; + (id)immediateScheduler; + (id)globalAsyncScheduler; + (id)schedulerWithDispatchQueue:(id)a0; @end