true;
	}

	/**
	 * Install and activate the standalone plugin in the case it's missing.
	 *
	 * @return boolean|WP_Error
	 */
	final public static function install_and_activate_standalone() {
		/**
		 * Check for the presence of the standalone plugin, ignoring Jetpack presence.
		 *
		 * If the standalone plugin is not installed and the user can install plugins, proceed with the installation.
		 */
		if ( ! parent::is_plugin_installed() ) {
			/**
			 * Check for permissions
			 */
			if ( ! current_user_can( 'install_plugins' ) ) {
				return new WP_Error( 'not_allowed', __( 'You are not allowed to install plugins on this site.', 'jetpack-my-jetpack' ) );
			}

			/**
			 * Install the plugin
			 */
			$installed = Plugins_Installer::install_plugin( static::get_plugin_slug() );
			if ( is_wp_error( $installed ) ) {
				return $installed;
			}
		}

		/**
		 * Activate the installed plugin
		 */
		$result = static::activate_plugin();

		if ( is_wp_error( $result ) ) {
			return $result;
		}

		/**
		 * Activate the module as well, if the user has a plan
		 * or the product does not require a plan to work
		 */
		if ( static::has_required_plan() ) {
			$module_activation = ( new Modules() )->activate( static::$module_name, false, false );

			if ( ! $module_activation ) {
				return new WP_Error( 'module_activation_failed', __( 'Error activating Jetpack module', 'jetpack-my-jetpack' ) );
			}
		}

		return true;
	}
}