><span class="lineno">   40</span>&#160;        std::size_t <span class="keywordtype">id</span> = 0;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;        std::string userId = <span class="stringliteral">&quot;&quot;</span>;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;        T data;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;        <span class="keywordtype">void</span> setId(std::string_v