Automattic / jetpack

		if ( count( $old_value ) > $value )  {

			$disabled_theme_names = array_keys( array_diff_key( $old_value, $value ) );

			$disabled_themes = array();

			foreach ( $disabled_theme_names as $name ) {

				$theme = wp_get_theme( $name );

				$disabled_themes[ $name ] = array(

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

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

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

				);

			}

			/**

			 * Trigger action to alert $callable sync listener that network themes were disabled

		$enabled_theme_names = array_keys( array_diff_key( $value, $old_value ) );

		$enabled_themes = array();

		foreach ( $enabled_theme_names as $name ) {

			$theme = wp_get_theme( $name );

			$enabled_themes[ $name ] = array(

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

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

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

			);

		}

		/**

		 * Trigger action to alert $callable sync listener that network themes were enabled