s="token string">'firstName'</span><span class="token punctuation">,</span> <span class="token string">'Yehuda'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
user<span class="token punctuation">.</span><span class="token function">set</span><span class="token punctuation">(</span><span class="token string">'lastName'</span><span class="token punctuation">,</span> <span class="token string">'Katz'</span><span class="token punctuation">)</span><span class="token punctu