src/vs/workbench/common/notifications.ts/NotificationViewItemProgress/worked
class NotificationViewItemProgress:	worked(value: number): void {
		if (typeof this._state.worked === 'number') {
			this._state.worked += value;
		} else {
			this._state.worked = value;
		}

		this._state.infinite = undefined;
		this._state.done = undefined;

		this._onDidChange.fire();
	}