span></code>.
        This expression may access a variable named <code class="computeroutput"><span class="identifier">obj</span></code>
        of type <code class="computeroutput"><span class="identifier">type_name</span><span class="special">&amp;</span></code>
        or <code class="computeroutput"><span class="identifier">type_name</span> <span class="keyword">const</span><span class="special">&amp;</span></code> which represents the underlying instance
        of <code class="computeroutput"><span c