title: How to use featured image in Previous/Next navigation on single.php
body: <p>I am using twenty fifteen theme in wordpress. I want to add featured image in post navigation of single.php</p>
  
  <p>For navigation code is</p>
  
  <pre><code>the_post_navigation( array(
        'next_text' =&gt; '&lt;span class="meta-nav" aria-hidden="true"&gt;' . __( 'Next', 'twentyfifteen' ) . '&lt;/span&gt; ' .
            '&lt;span class="screen-reader-text"&gt;' . __( 'Next post:', 'twentyfifteen' ) . '&lt;/span&gt; ' .
            '&lt;span class="post-title"&gt;%title&lt;/span&gt;',
        'prev_text' =&gt; '&lt;span class="meta-nav" aria-hidden="true"&gt;' . __( 'Previous', 'twentyfifteen' ) . '&lt;/span&gt; ' .
            '&lt;span class="screen-reader-text"&gt;' . __( 'Previous post:', 'twentyfifteen' ) . '&lt;/span&gt; ' .
            '&lt;span class="post-title"&gt;%title&lt;/span&gt;',
    ) );
  </code></pre>
  
  <p>How can i add image in this code ?</p>