Elementor media control 2

$this->add_control('imagex', [
    'label' => __('My image', 'elementor-extension'),
    'type' => \Elementor\Controls_Manager::MEDIA,
    'default' => [
        'url' => \Elementor\Utils::get_placeholder_image_src()
    ]
]);
$this->add_group_control(
    \Elementor\Group_Control_Image_Size::get_type(),
    [
        'default' => 'large',
        'name' => 'imagez'
    ]
);