### Question:
MongoDbPageLayout extends PageLayoutImpl { @Override public int hashCode() { int result = super.hashCode(); result = 31 * result + (id != null ? id.hashCode() : 0); return result; }  String getId(); void setId(String id); @Override boolean equals(Object o); @Override int hashCode();  }### Answer:
@Test public void hashCode_Valid(){ assertNotNull(pageLayout.hashCode()); }