Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/wp-mail-smtp/src/Compatibility/Plugin/Admin2020.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace WPMailSMTP\Compatibility\Plugin;
+
+/**
+ * Admin 2020 Lite compatibility plugin.
+ *
+ * @since 2.8.0
+ */
+class Admin2020 extends PluginAbstract {
+
+	/**
+	 * Get plugin name.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @return string
+	 */
+	public static function get_name() {
+
+		return 'Admin 2020';
+	}
+
+	/**
+	 * Get plugin path.
+	 *
+	 * @since 2.8.0
+	 *
+	 * @return string
+	 */
+	public static function get_path() {
+
+		return 'admin-2020/admin-2020.php';
+	}
+
+	/**
+	 * Execute on init action in admin area.
+	 *
+	 * @since 2.8.0
+	 */
+	public function load_admin() {
+
+		add_action( 'wp_mail_smtp_admin_setup_wizard_load_setup_wizard_before', [ $this, 'disable_admin_bar' ] );
+	}
+
+	/**
+	 * Disable admin bar on Setup Wizard page.
+	 *
+	 * @since 2.8.0
+	 */
+	public function disable_admin_bar() {
+
+		global $wp_admin_bar;
+		$wp_admin_bar = ''; // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
+	}
+}