span><span class=identifier>employee</span><span class=special>,</span><span class=identifier>std</span><span class=special>::</span><span class=identifier>string</span><span class=special>,</span><span class=identifier>name</span><span class=special>)&gt;,
      </span><span class=identifier>ordered_non_unique</span><span class=special>&lt;
        </span><span class=identifier>tag</span><span class=special>&lt;</span><span class=identifier>age</span><span class=special>&gt;,
        </span><span class=ide