/**
* @brief Callback used to set the links for some leaf of the cluster (Torus, FatTree, etc)
*
+ * The coord parameter depends on the cluster being created:
+ * - Torus: Direct translation of the Torus' dimensions, e.g. (0, 0, 0) for a 3-D Torus
+ * - Fat-Tree: A pair (level in the tree, id), e.g. (0, 0): first leaf and (1,0): first switch at level 1.
+ * - Dragonfly: a tuple (group, chassis, blades/routers, nodes), e.g. (0, 0, 0, 0) for first node in the cluster.
+ * Important: To identify the router inside a "group, chassis, blade", we use MAX_UINT in the last parameter (e.g. 0,
+ * 0, 0, 4294967295).
+ *
* @param zone: The newly create zone, needed for creating new resources (hosts, links)
* @param coord: the coordinates of the element
* @param id: Internal identifier of the element
