twentynineteen_post_thumbnail()

143	function twentynineteen_post_thumbnail() {144		if ( ! twentynineteen_can_show_post_thumbnail() ) {145			return;146		}147 148		if ( is_singular() ) :149			?>150 151			<figure class="post-thumbnail">152				<?php the_post_thumbnail(); ?>153			</figure><!-- .post-thumbnail -->154 155			<?php156		else :157			?>158 159		<figure class="post-thumbnail">160			<a class="post-thumbnail-inner" href="<?php the_permalink(); ?>" aria-hidden="true" tabindex="-1">161				<?php the_post_thumbnail( 'post-thumbnail' ); ?>162			</a>163		</figure>164 165			<?php166		endif; // End is_singular().167	}