public SourceCallChainInfo(SootMethod m,Stmt s,String type){
  this.type=type;
  this.link="as_call";
  this.method=m;
  this.stmt=s;
  calls=1;
  if (type.equals("syscall"))   syscalls=1;
}

public SourceCallChainInfo ( SootMethod m , Stmt s , String type ) { this . type = type ; this . link = "as_call" ; this . method = m ; this . stmt = s ; calls = 1 ; if ( type . equals ( "syscall" ) ) syscalls = 1 ; }
creates a call from stmt s to sootmethod m
