1100     on(type: 'progress', callback: (receivedSize: number, totalSize: number) => void): void;  method
1184     on(type: 'complete' | 'pause' | 'remove', callback: () => void): void;  method
1262     on(type: 'fail', callback: (err: number) => void): void;  method
2204     on(type: 'progress', callback: (uploadedSize: number, totalSize: number) => void): void;  method
2282     on(type: 'headerReceive', callback: (header: object) => void): void;  method
2354     on(type: 'complete' | 'fail', callback: Callback<Array<TaskState>>): void;  method
4770       on(event: 'progress', callback: (progress: Progress) => void): void;  method
4823       on(event: 'completed', callback: (progress: Progress) => void): void;  method
4875       on(event: 'failed', callback: (progress: Progress) => void): void;  method
4925       on(event: 'pause', callback: (progress: Progress) => void): void;  method
4973       on(event: 'resume', callback: (progress: Progress) => void): void;  method
5021       on(event: 'remove', callback: (progress: Progress) => void): void;  method
5072       on(event: 'response', callback: Callback<HttpResponse>): void;  method
5111       on(event: 'faultOccur', callback: Callback<Faults>): void;  method
5135       on(event: 'wait', callback: Callback<WaitingReason>): void;  method