How to use ConfigurationProperties (feel so good.)

Application.yml

kamera:
  pentax:
    lens: 18-50 zoom
    

ArenoSetting.java

@Component
@ConfigurationProperties(prefix = "kamera")
@Data
public class KameraSetting {
  private Kamera pentax;

  @Data
  public static Kamera{
    private String lens;
  }
}