addRoot GatingHierarchy getAncestor getChildren getDescendants getNodeDepths getNodeID getNodeProperty getParent getPopPaths getVertices tree

VertexID getAncestor ( VertexID  u, unsigned short  level  ) Get ancestor node for the given node Assume getParent only returns one parent node per GatingHierarchy Parameters u the given node ID level specify the distance from the given node