span class="ruby-value">:extension</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-identifier">ext</span>, <span class="ruby-value">:content_type</span> <span class="ruby-operator">=&gt;</span> <span class="ruby-identifier">most_frequent_ct</span>)
  }

  <span class="ruby-keyword">self</span>.<span class="ruby-identifier">overrides</span> = []

  <span class="ruby-comment"># Add overrides for the files with known extensions but different content types.</span>
  <span class="ruby-identifie