### Question:
FiduciaAccountInformationService extends BaseAccountInformationService { @Override protected Map<String, String> populatePostHeaders(Map<String, String> headers) { return withDateHeader(headers); } FiduciaAccountInformationService(Aspsp aspsp,
                                            HttpClient httpClient,
                                            Interceptor requestBuilderInterceptor,
                                            LinksRewriter linksRewriter); @Override Response<ConsentsResponse201> createConsent(RequestHeaders requestHeaders,
                                                       RequestParams requestParams,
                                                       Consents body); @Override Response<TransactionsResponse200Json> getTransactionList(String accountId,
                                                                    RequestHeaders requestHeaders,
                                                                    RequestParams requestParams); @Override List<ValidationError> validateGetTransactionList(String accountId,
                                                            RequestHeaders requestHeaders,
                                                            RequestParams requestParams); @Override List<ValidationError> validateGetTransactionListAsString(String accountId,
                                                                    RequestHeaders requestHeaders,
                                                                    RequestParams requestParams); @Override Response<OK200TransactionDetails> getTransactionDetails(String accountId,
                                                                   String transactionId,
                                                                   RequestHeaders requestHeaders,
                                                                   RequestParams requestParams); @Override Response<SelectPsuAuthenticationMethodResponse> updateConsentsPsuData(
        String consentId,
        String authorisationId,
        RequestHeaders requestHeaders,
        RequestParams requestParams,
        SelectPsuAuthenticationMethod selectPsuAuthenticationMethod
    ); @Override Response<StartScaprocessResponse> startConsentAuthorisation(
        String consentId,
        RequestHeaders requestHeaders,
        RequestParams requestParams,
        UpdatePsuAuthentication updatePsuAuthentication
    );  }### Answer:
@Test void populatePostHeaders() { Map<String, String> postHeaders = service.populatePostHeaders(new HashMap<>()); assertThat(postHeaders) .hasSize(1) .containsKeys(DATE_HEADER); }