Render nested QAbstractItemModels

[JustusR]

I'm adding Qt support to an upstream C++ library that has its own model types by making the upstream library's existing types inherit QAbstractItemModel with the intention of using these models in a QML application. Everything is going well for the simple models, however some of the upstream classes are nested, and the resulting structure looks something like this:

class MyClass1 : QAbstractItemModel
{
    Q_OBJECT
    Q_PROPERTY(int a READ get_a NOTIFY updated_a)

public:    
    enum Roles {
        IDRole = Qt::UserRole + 1,          // QString
        NameRole = Qt::UserRole + 2,        // QString
        SubmodelRole = Qt::UserRole + 3,    // MyClass2*
    };
    
    Q_INVOKABLE bool function1(int, bool);
    int get_a();
    // QAbstractItemModel overridden functions omitted

signals:
    void signal1();
    void updated_a();
};

class MyClass2 : QAbstractItemModel
{
    Q_OBJECT
    Q_PROPERTY(QString b READ get_b NOTIFY updated_b)
    Q_PROPERTY(int c READ get_c NOTIFY updated_c)

public:    
    enum Roles {
        AmountRole = Qt::UserRole + 1,      // int
        SubmodelRole = Qt::UserRole + 2,    // MyClass3*
    };
    
    Q_INVOKABLE bool function2(bool);
    QString get_b();
    int get_c();
    // QAbstractItemModel overridden functions omitted

signals:
    void signal2();
    void updated_b();
    void updated_c();
};

class MyClass3 : QAbstractItemModel
{
    Q_OBJECT

public:    
    enum Roles {
        DateRole = Qt::UserRole + 1,          // QDateTime
        DescriptionRole = Qt::UserRole + 2,   // QString
    };
    
    Q_INVOKABLE bool function3(QString);
    // QAbstractItemModel overridden functions omitted

signals:
    void signal3();
};

Is it possible to make a QML page that fully displays a MyClass1 model, including any submodels that may be present?