### Question:
MapBean extends AbstractEntity implements Map<K, V> { public V remove(Object key) { throw new RuntimeException("Keys are not mutable in this map"); } MapBean(); void clear(); boolean containsKey(Object key); boolean containsValue(Object value); Set<java.util.Map.Entry<K, V>> entrySet(); V get(Object key); boolean isEmpty(); Set<K> keySet(); V put(K key, V value); void putAll(
			Map<? extends K, ? extends V> m); V remove(Object key); int size(); Collection<V> values(); @SuppressWarnings("rawtypes") boolean equals(Object obj); static final String PROPERTY_CONTENTS; }### Answer:
@Test(expected=RuntimeException.class) public void testRemove() { d_map.remove(BasicStudyCharacteristic.ALLOCATION); }