@Test
public void createdInstanceIsIsolatedTest() {

    final ObjectMapper first = ModelObjectMapper.createNewObjectMapper();
    final ObjectMapper second = ModelObjectMapper.createNewObjectMapper();
    // Precondition
    assertThat(first).isNotEqualTo(second);
    assertThat(first.getPropertyNamingStrategy())
            .isEqualTo(second.getPropertyNamingStrategy())
            .isNull();
    // Do
    first.setPropertyNamingStrategy(PropertyNamingStrategy.SNAKE_CASE);
    // Verify
    assertThat(first.getPropertyNamingStrategy())
            .isNotEqualTo(second.getPropertyNamingStrategy());
}