WP_Media_List_Table::column_default

		echo '<div class="post-com-count-wrapper">';

		if ( isset( $this->comment_pending_count[ $post->ID ] ) ) {
			$pending_comments = $this->comment_pending_count[ $post->ID ];
		} else {
			$pending_comments = get_pending_comments_num( $post->ID );
		}

		$this->comments_bubble( $post->ID, $pending_comments );

		echo '</div>';
	}

	/**
	 * Handles output for the default column.
	 *
	 * @since 4.3.0
	 *
	 * @param WP_Post $post        The current WP_Post object.
	 * @param string  $column_name Current column name.
	 */
	public function column_default( $post, $column_name ) {
		if ( 'categories' === $column_name ) {
			$taxonomy = 'category';
		} elseif ( 'tags' === $column_name ) {
			$taxonomy = 'post_tag';
		} elseif ( 0 === strpos( $column_name, 'taxonomy-' ) ) {
			$taxonomy = substr( $column_name, 9 );
		} else {
			$taxonomy = false;
		}

		if ( $taxonomy ) {
			$terms = get_the_terms( $post->ID, $taxonomy );
			if ( is_array( $terms ) ) {
				$out = array();
				foreach ( $terms as $t ) {
					$posts_in_term_qv             = array();
					$posts_in_term_qv['taxonomy'] = $taxonomy;
					$posts_in_term_qv['term']     = $t->slug;

					$out[] = sprintf(
						'<a href="%s">%s</a>',
						esc_url( add_query_arg( $posts_in_term_qv, 'upload.php' ) ),
						esc_html( sanitize_term_field( 'name', $t->name, $t->term_id, $taxonomy, 'display' ) )
					);
				}