The EntryBuilder.buildWithHistory () method there is a potential problem of circular reference.

[yososs]

The EntryBuilder.buildWithHistory () method there is a potential problem of circular reference.
Stack overflow exception is thrown at the timing to write the KeePassFile to file.

Circulation call occurs in Entry.hashCode () method.

    @Test
    public void testBuildWithHistory() {
        UUID uuid = UUID.randomUUID();
        Entry entry = new EntryBuilder("v1").uuid(uuid).build();
        Entry entry2 = new EntryBuilder(entry).title("v2").buildWithHistory();
        Entry entry3 = new EntryBuilder(entry2).title("v3").buildWithHistory();
        try{
            entry.hashCode();
            entry2.hashCode();
            entry3.hashCode();
        }catch(StackOverflowError e){
            e.printStackTrace();
            Assert.fail();
        }
    }