public function install()
    {
        $pkg = parent::install();
 
        // Create Express object
        $student = Express::buildObject('student', 'students', 'Student', $pkg);
        $student->addAttribute('text', 'First Name', 'first_name');
        $student->addAttribute('text', 'Last Name', 'last_name');
        $student->addAttribute('textarea', 'Bio', 'bio');
        $student->addAttribute('datetime', 'Birthday', 'birthday');
 
        $student->save();
 
        // Create form
        $form = $student->buildForm('Form');
        $form->addFieldset('Basics')
            ->addAttributeKeyControl('first_name')
            ->addAttributeKeyControl('last_name')
            ->addAttributeKeyControl('birthday')  
            ->addTextControl('', 'This is just some basic explanatory text.')
            ->addAttributeKeyControl('bio');
        $form = $form->save();
 
        // Set default forms
        $student->getEntity()->setDefaultViewForm($form);
        $student->getEntity()->setDefaultEditForm($form);
        $student->save();
    }