### Question:
ReceiveConfigurationItemsCommand { public Set<ConfigurationItem> getConfigurationItems() { return configurationItems; } ReceiveConfigurationItemsCommand(ChargingStationId chargingStationId, Set<ConfigurationItem> configurationItems, Set<String> requestedKeys, IdentityContext identityContext); ChargingStationId getChargingStationId(); Set<ConfigurationItem> getConfigurationItems(); Set<String> getRequestedKeys(); IdentityContext getIdentityContext(); @Override int hashCode(); @Override boolean equals(Object obj); @Override String toString();  }### Answer:
@Test(expected = UnsupportedOperationException.class) public void unsupportedOperationExceptionThrownWhenModifyingConfigurationItems() { new ReceiveConfigurationItemsCommand(CHARGING_STATION_ID, CONFIGURATION_ITEMS, REQUESTED_CONFIGURATION_KEYS, ROOT_IDENTITY_CONTEXT).getConfigurationItems().add(new ConfigurationItem("foo", "bar")); }