### Question:
LNodeEntry implements Entry<K, V> { @Override @SuppressWarnings("checkstyle:hiddenField") public final V setValue(final V value) { throw new UnsupportedOperationException(); } LNodeEntry(final K key, final V value); @Override final K getKey(); @Override final V getValue(); @Override @SuppressWarnings("checkstyle:hiddenField") final V setValue(final V value); @Override final int hashCode(); @SuppressFBWarnings(value = "EQ_UNUSUAL", justification = "Equality handled by utility methods") @Override final boolean equals(final Object obj); @Override final String toString();  }### Answer:
@Test public void testSetValue() { assertThrows(UnsupportedOperationException.class, () -> entry.setValue(null)); }