### Question:
DirectoryV3TotpPostRequest { @Override public int hashCode() { return Objects.hash(identifer); } DirectoryV3TotpPostRequest(String identifer); String getIdentifier(); @Override boolean equals(Object o); @Override int hashCode(); @Override String toString();  }### Answer:
@Test public void hashCodeEqualForEquivalentObjects() { assertEquals(new DirectoryV3TotpPostRequest("expected identifier").hashCode(), request.hashCode()); }
@Test public void hashCodeDifferentForDifferentIdentifiers() { assertNotEquals(new DirectoryV3TotpPostRequest("different").hashCode(), request.hashCode()); }