How to use the roosterjs-editor-core.Keys.ENTER function in roosterjs-editor-core

// So here we add an extra SPAN for Edge to workaround this bug
const NEWLINE_HTML = Browser.isEdge ? '<div><span><br></span></div>' : '<div><br></div>';
const CHILD_PARENT_TAG_MAP: { [childTag: string]: string } = {
    TD: 'TABLE',
    TH: 'TABLE',
    LI: 'OL,UL',
};
const CHILD_SELECTOR = Object.keys(CHILD_PARENT_TAG_MAP).join(',');

/**
 * InsertLineBeforeStructuredNode edit feature, provides the ability to insert an empty line before
 * a structured element (bullet/numbering list, blockquote, table) if the element is at beginning of
 * document
 */
export const InsertLineBeforeStructuredNodeFeature: ContentEditFeature = {
    keys: [Keys.ENTER],
    shouldHandleEvent: cacheGetStructuredElement,
    handleEvent: (event, editor) =&gt; {
        let element = cacheGetStructuredElement(event, editor);
        let div = fromHtml(NEWLINE_HTML, editor.getDocument())[0] as HTMLElement;
        editor.addUndoSnapshot(() =&gt; {
            element.parentNode.insertBefore(div, element);
            // Select the new line when we are in table. This is the same behavior with Word
            if (getTagOfNode(element) == 'TABLE') {
                editor.select(new Position(div, PositionType.Begin).normalize());
            }
        });
        event.rawEvent.preventDefault();
    },
};

function cacheGetStructuredElement(event: PluginKeyboardEvent, editor: Editor) {

*/
export const UnquoteWhenBackOnEmpty1stLine: ContentEditFeature = {
    keys: [Keys.BACKSPACE],
    shouldHandleEvent: (event, editor) => {
        let childOfQuote = cacheGetQuoteChild(event, editor);
        return childOfQuote && isNodeEmpty(childOfQuote) && !childOfQuote.previousSibling;
    },
    handleEvent: splitQuote,
};

/**
 * UnquoteWhenEnterOnEmptyLine edit feature, provides the ability to Unquote current line when
 * user press ENTER on an empty line of a BLOCKQUOTE
 */
export const UnquoteWhenEnterOnEmptyLine: ContentEditFeature = {
    keys: [Keys.ENTER],
    shouldHandleEvent: (event, editor) => {
        let childOfQuote = cacheGetQuoteChild(event, editor);
        let shift = event.rawEvent.shiftKey;
        return !shift && childOfQuote && isNodeEmpty(childOfQuote);
    },
    handleEvent: (event, editor) => editor.performAutoComplete(() => splitQuote(event, editor)),
};

function cacheGetQuoteChild(event: PluginKeyboardEvent, editor: Editor): Node {
    return cacheGetEventData(event, 'QUOTE_CHILD', () => {
        let quote = editor.getElementAtCursor(STRUCTURED_TAGS);
        if (quote && getTagOfNode(quote) == QUOTE_TAG) {
            let pos = editor.getFocusedPosition();
            let block = pos && editor.getBlockElementAtNode(pos.normalize().node);
            if (block) {
                let node =

*/
export const OutdentWhenBackOn1stEmptyLine: ContentEditFeature = {
    keys: [Keys.BACKSPACE],
    shouldHandleEvent: (event, editor) => {
        let li = cacheGetElementAtCursor(editor, event, 'LI');
        return li && isNodeEmpty(li) && !li.previousSibling;
    },
    handleEvent: toggleListAndPreventDefault,
};

/**
 * OutdentWhenEnterOnEmptyLine edit feature, provides the ability to outdent current item if user press
 * ENTER at the beginning of an empty line of a list
 */
export const OutdentWhenEnterOnEmptyLine: ContentEditFeature = {
    keys: [Keys.ENTER],
    shouldHandleEvent: (event, editor) => {
        let li = cacheGetElementAtCursor(editor, event, 'LI');
        return !event.rawEvent.shiftKey && li && isNodeEmpty(li);
    },
    handleEvent: (event, editor) => {
        editor.performAutoComplete(() => toggleListAndPreventDefault(event, editor));
    },
};

/**
 * AutoBullet edit feature, provides the ablility to automatically convert current line into a list.
 * When user input "1. ", convert into a numbering list
 * When user input "- " or "* ", convert into a bullet list
 */
export const AutoBullet: ContentEditFeature = {
    keys: [Keys.SPACE],