package com.github.sevntu.checkstyle.checks.design;
   
   import java.util.*;
   public class InputPublicReferenceToPrivateTypeCheck7 {
       private class PrivateInner{
           private String name="Private inner";
       }   
       public class PublicInner{
           private String name="Public inner";
      }   
      public PublicInner returnPublic(){  //OK
          return new PublicInner();
      }
      public Set<TreeSet<PrivateInner>>returnPrivate(){   //WARNING
          return new HashSet<TreeSet<PrivateInner>>();
      }
  }