WP_Widget_Media::display_media_state( array $states, WP_Post $post = null )

	public function display_media_state( $states, $post = null ) {
		if ( ! $post ) {
			$post = get_post();
		}

		// Count how many times this attachment is used in widgets.
		$use_count = 0;
		foreach ( $this->get_settings() as $instance ) {
			if ( isset( $instance['attachment_id'] ) && $instance['attachment_id'] === $post->ID ) {
				$use_count++;
			}
		}

		if ( 1 === $use_count ) {
			$states[] = $this->l10n['media_library_state_single'];
		} elseif ( $use_count > 0 ) {
			$states[] = sprintf( translate_nooped_plural( $this->l10n['media_library_state_multi'], $use_count ), number_format_i18n( $use_count ) );
		}

		return $states;
	}