sd">        refer https://observablehq.com/@d3/color-schemes for color options</span>
<span class="sd">    theme : str</span>
<span class="sd">        The theme to use for the visualization. Possible values are &#39;auto&#39;, &#39;light&#39;, and &#39;dark&#39;. Default is &#39;auto&#39;.</span>

<span class="sd">    Raises</span>
<span class="sd">    ------</span>
<span class="sd">    ValueError</span>
<span class="sd">        If src_tokens is None or if attn is empty or if attn contains an unknown type o