(</span><span class="va">get_model_data</span>,</span>
<span>                           required_columns <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"date"</span><span class="op">)</span>, <span class="co"># less restriction on column</span></span>
<span>                           model_f <span class="op">=</span> <span class="va">decompose_sessions</span>,</span>
<span>                        