AGSObservableOperation.h

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#import <Foundation/Foundation.h>
#import <ArcGIS/AGSOperation.h>
 //Required for Globals API doc
 
@interface AGSObservableOperation : AGSOperationBase 
 
 
@property (nullable, nonatomic, strong, readonly ) id result;
 
@property (nullable, nonatomic, strong, readonly) NSError *error;
 
-(void)registerListener:(id)listener forCompletion:(void(^)(id __nullable result, NSError * __nullable error))completion;
 
-(void)unregisterListener:(id)listener;
 
-(BOOL)isRegisteredListener:(id)listener;
 
 
@end