### Question:
Referenceable extends ElementHeader { @Override public int hashCode() { return Objects.hash(super.hashCode(), getQualifiedName(), getAdditionalProperties(), getMeanings()); } Referenceable();  Referenceable(Referenceable template); void setQualifiedName(String qualifiedName); String getQualifiedName(); void setAdditionalProperties(Map<String, String> additionalProperties); Map<String, String> getAdditionalProperties(); List<Meaning> getMeanings(); void setMeanings(List<Meaning> meanings); @Override String toString(); @Override boolean equals(Object objectToCompare); @Override int hashCode();  }### Answer:
@Test public void testHashCode() { assertTrue(getTestObject().hashCode() == getTestObject().hashCode()); }