contract AAT{
  export function aa(arg){
    var oldList=  [];
    var removedList = [];
    var  newList = [];
    for (var i=0;i<oldList.length;i++) {

      if (roles.indexOf(oldList[i])!=-1){
        removedList.push(oldList[i]);
      } else{

      a=1;
      }

    }
  }
}