public StandardizeApart(VariableCollector variableCollector,
                         SubstVisitor substVisitor)
 {
     this.variableCollector = variableCollector;
     this.substVisitor      = substVisitor;
 }
 public StandardizeApart()
 {
     variableCollector = new VariableCollector();
     substVisitor      = new SubstVisitor();
 }