@Test
public void testSuccessWithMissingBehavior() throws Exception {

    // Given
    final GenericCommand<String> command = getCommand(
            "http://localhost:" + port + "/command/test/success_with_unknown", GenericCommandTest::error);
    // When
    final String result = command.run();
    // Then
    assertThat(result, nullValue()); // Missing behavior for 202 -> returns null.
    assertThat(lastException, nullValue());
}