Set Button in PluginDocumentSettingPanel Content (WordPress Gutenberg)

I finally solved it like this:

var registerPlugin = wp.plugins.registerPlugin;
var PluginDocumentSettingPanel = wp.editPost.PluginDocumentSettingPanel;
var Button = wp.components.Button;
var el = wp.element.createElement;
var __ = wp.i18n.__;

function onButtonClick() {
    alert( 'Button is clicked' );
}

function MyDocumentSettingPlugin() {
    return el(

        PluginDocumentSettingPanel,
        {
            name: 'my-document-setting-plugin',
            title: 'My Panel',
            icon: 'dashicon-name',
        },
        __( 'My Document Setting Panel Content', 'text-domain' ),

        el(
            Button,
            {
                className: 'myclass',
                isDefault: true,
                onClick: onButtonClick,
            },
            __( 'Button Text', 'text-domain' ),
        ),

    );
}

registerPlugin( 'my-document-setting-plugin', {
    render: MyDocumentSettingPlugin,
} );