Hi, There are three classes, namely soot.jimple.toolkits.pointer.DependenceGraph, soot.jimple.toolkits.pointer.DependenceTag,and soot.jimple.toolkits.pointer.DependenceTagAggregator, in soot's source code. However it seems that no document illustrates the usage of such dependence graph. Can any one show me an simple example? Thank you!