docs: public URL getPresignedSynthesizeSpeechUrl(SynthesizeSpeechPresignRequest synthesizeSpeechPresignRequest) {
          Request<?> request = newRequest(synthesizeSpeechPresignRequest.getSigningCredentials());
          request.setEndpoint(endpoint);
          request.setResourcePath("/v1/speech");
          request.setHttpMethod(HttpMethodName.GET);
          marshallIntoRequest(synthesizeSpeechPresignRequest, request);
          Date expirationDate = synthesizeSpeechPresignRequest.getExpirationDate() == null ?
                  getDefaultExpirationDate() : synthesizeSpeechPresignRequest.getExpirationDate();
          return presignerFacade.presign(request, expirationDate);
      }