 class="r-out co"><span class="r-pr">#&gt;</span> [1] "Next class is O"</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "Calling class O `foo` method"</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "Self is a"</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] "Next class is BASE"</span>
<span class="r-in"><span></span></span>
<span class="r-in"><span></span></span>
</code></pre></div>
    </div>
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