### Question:
DecoupledAisAuthorizationService implements AisAuthorizationService { @Override public ScaApproach getScaApproachServiceType() { return ScaApproach.DECOUPLED; }  @Override Optional<CreateConsentAuthorizationResponse> createConsentAuthorization(PsuIdData psuData, String consentId); @Override AuthorisationProcessorResponse updateConsentPsuData(UpdateAuthorisationRequest request, AuthorisationProcessorResponse response); @Override Optional<Authorisation> getConsentAuthorizationById(String authorisationId); @Override Optional<ScaStatus> getAuthorisationScaStatus(String consentId, String authorisationId); @Override ScaApproach getScaApproachServiceType();  }### Answer:
@Test void getScaApproachServiceType_success() { ScaApproach actualResponse = decoupledAisAuthorizationService.getScaApproachServiceType(); assertThat(actualResponse).isEqualTo(SCA_APPROACH); }