n><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">        Return RGB images from each environment</span>
<span class="sd">        &quot;&quot;&quot;</span>
        <span class="k">raise</span> <span class="ne">NotImplementedError</span></div>


    <span class="nd">@property</span>
    <span class="k">def</span> <span class="nf">unwrapped</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
        <span class="k">if</span> <span class="nb">isinstance</span><span c