n>
      <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">login</span>(<span class="ruby-identifier">user</span>, <span class="ruby-identifier">password</span> = <span class="ruby-keyword kw">nil</span>)
        <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">password</span> <span class="ruby-operator">!=</span> <span class="ruby-keyword kw">nil</span>
          <span class="ruby-ivar">@authToken</span> = <span class="ruby-ivar">@authenticator</span>.<span class="