title: Zend Framework 2: Clear some meta param from headMeta() view Helper?
body: <p>I set several default meta parametres in the Module.php:  </p>
  
  <pre><code>$hm =  $serviceManager-&gt;get('ViewHelperManager')-&gt;get('headMeta');
  $hm
    -&gt;appendProperty('og:image', '/images/opengraph/1.jpg')
    -&gt;appendProperty('og:image', '/images/opengraph/2.png');
  </code></pre>
  
  <p>Later one in some action I need to override these meta params and set some other images. I have no idea how to clear these existing 'og:image' params...  I've tried:  </p>
  
  <pre><code>$hm-&gt;appendProperty('og:image', null);
  //and
  $hm-&gt;unsetProperty('og:image');
  </code></pre>
  
  <p>But none worked. Any help?</p>