     }
     
     private func invokeSuccessCallbacksForIdentifier(_ identifier: String, url: URL, duration: TimeInterval, samples: [Float]) {
-        let callbackKey = CompletionCallbackKey(eventIdentifier: identifier, requiredNumberOfSamples: samples.count)
-        
-        guard let callbacks = completionCallbacks[callbackKey] else {
+        guard let callbacks = completionCallbacks[identifier] else {
             return
         }
         

            }
        }
        
        self.completionCallbacks[callbackKey] = nil
    }
    
    private func invokeFailureCallbacksForIdentifier(_ identifier: String, error: Error) {
        let callbackKey = CompletionCallbackKey(eventIdentifier: identifier, requiredNumberOfSamples: samples.count)
        
        guard let callbacks = completionCallbacks[callbackKey] else {
            return
        }
        

    }
}

struct VoiceMessageAttachmentCacheManagerLoadResult {
    let eventIdentifier: String
    let url: URL
