ter for the operator.</span>
<span class="sd">        sinkNode : int, optional</span>
<span class="sd">            Sink node index in the graph.</span>
<span class="sd">        sinkRate : float, optional</span>
<span class="sd">            Rate of transfer to the sink node.</span>
<span class="sd">        observables : list, optional</span>
<span class="sd">            List of observables to monitor during the walk.</span>
<span class="sd">        opts : Options, optional</span>
<span class="sd">           