public static RuleDescriptionSectionContextDto of(String key, String displayName) {
    return new RuleDescriptionSectionContextDto(key, displayName);
  }
@Test
  void check_of_with_key_is_empty() {
    assertThatThrownBy(() -> RuleDescriptionSectionContextDto.of("", CONTEXT_DISPLAY_NAME))
      .isInstanceOf(IllegalArgumentException.class)
      .hasMessage(KEY_MUST_BE_SET_ERROR);
  }