How to use the prosemirror-schema-list.listItem.content function in prosemirror-schema-list

// heading shall only contain unmarked text
    const heading = nodes.get('heading');
    heading.content = 'text*';
    heading.marks = '';
    heading.group = 'baseonly';
    nodes = nodes.update('heading', heading);

    orderedList.group = 'container';
    orderedList.content = 'list_item+';
    nodes = nodes.update('ordered_list', orderedList);

    bulletList.group = 'container';
    bulletList.content = 'list_item+';
    nodes = nodes.update('bullet_list', bulletList);

    listItem.content = '(paragraph | protected_block | substitution_block)+ (ordered_list | bullet_list)?';
    nodes = nodes.update('list_item', listItem);

    nodes = nodes.append(tableNodes({
        tableGroup: 'container',
        cellContent: '(paragraph | protected_block | substitution_block)+',
        cellAttributes: {
            align: {
                default: '',
                setDOMAttr(val, attr) {
                    if (!val) {
                        // eslint-disable-next-line no-param-reassign
                        attr.class = null;
                        return;
                    }
                    // eslint-disable-next-line no-param-reassign
                    attr.class = `${val}align`;