1/** 2 * the ut for method in interface, method is promise 3 */ 4export interface Test { 5 /** 6 * the ut for method in interface, method has event subscription 7 */ 8 on(type: 'play', callback: Callback<void>): void; 9 10 /** 11 * the ut for method in interface, method has event subscription 12 */ 13 off(type: 'play', callback: Callback<void>): void; 14}