span class="token tag"><span class="token tag"><span class="token punctuation">&lt;/</span>summary</span><span class="token punctuation">&gt;</span></span></span>
    <span class="token punctuation">[</span><span class="token function">Required</span><span class="token punctuation">(</span>ErrorMessage <span class="token operator">=</span> <span class="token string">&quot;邮件不能为空!&quot;</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token funct