How to use the test-drive-react.simulate.keyDown function in test-drive-react

beforeEach(() => {
                simulate.focus(ampm);
                simulate.keyDown(ampm, {keyCode: keycode('space')});
            });
            it('onChange should be callen with "16:55"', () => {

it('should appear when the Enter key is pressed and the openOnFocus property is set to false', async () => {
            const {waitForDom} = clientRenderer.render();

            simulate.focus(bodySelect(datePickerInputId));

            await waitForDom(() => expect(bodySelect(datePickerDropdownId)).to.be.absent());

            simulate.keyDown(bodySelect(datePickerInputId), {keyCode: keycode('enter')});

            await waitForDom(() => expect(bodySelect(datePickerDropdownId)).to.be.present());
        });

beforeEach(() => {
                simulate.focus(mm);
                simulate.click(mm);
                simulate.keyDown(mm, {keyCode: keycode('backspace')});
                simulate.keyDown(mm, {keyCode: keycode('backspace')});
            });
            it('hh input should have "13" value', () => {

public pressEnter() {
        simulate.keyDown(this.nativeInput, {keyCode: KeyCodes.enter});
    }

public keyDown(key: string, opts?: object) {
        simulate.keyDown(this.handle, {
            keyCode: keycode(key),
            ...opts
        });
    }

public keyDown(eventData: object): void {
        simulate.keyDown(this.root, eventData);
    }

public pressEsc() {
        simulate.keyDown(this.nativeInput, {keyCode: KeyCodes.esc});
    }

public pressUpKey(opts?: Modifiers) {
        simulate.keyDown(this.nativeInput, {keyCode: KeyCodes.up, ...opts});
    }

public pressDownKey(opts?: Modifiers) {
        simulate.keyDown(this.nativeInput, {keyCode: KeyCodes.down, ...opts});
    }

public keyPress(keyCode: number): void {
        simulate.keyDown(this.input, {keyCode});
    }