Automattic / jetpack

	private function get_theme_details_for_slugs( $theme_slugs ) {

		$theme_data = array();

		foreach ( $theme_slugs as $slug ) {

			$theme = wp_get_theme( $slug );

			$theme_data[ $slug ] = array(

				'name' => $theme->get( 'Name' ),

				'version' => $theme->get( 'Version' ),

				'uri' => $theme->get( 'ThemeURI' ),

				'slug' => $slug,

			);

		}

		return $theme_data;

	}

		if ( 'update' === $details['action'] ) {

			$themes = array();

			foreach ( $details['themes'] as $theme_slug ) {

				$theme = wp_get_theme( $theme_slug );

				if ( ! $theme instanceof WP_Theme ) {

					continue;

				}

				$themes[ $theme_slug ] = array(

					'name' => $theme->get( 'Name' ),

					'version' => $theme->get( 'Version' ),

					'uri' => $theme->get( 'ThemeURI' ),

					'stylesheet' => $theme->stylesheet,

				);

			}

			if ( empty( $themes ) ) {

				return;