pear in the model, and if they're used as start and/or end points. This class aims to simplify variable index usage, allowing users to use NodeIndex instead. Usage: .cpp} auto starts_ends = ...; /// These are NodeIndex. <a class="el" href="classcom_1_1google_1_1ortools_1_1constraintsolver_1_1RoutingIndexManager.html" title="Manager for any NodeIndex &lt;-&gt; variable index conversion.">RoutingIndexManager</a> manager(10, 4, starts_ends); // 10 nodes, 4 vehicles. <a class="el" href="classcom_1_1google_1_1or