code: public Observable<ServiceResponse<ListAccountSasResponseInner>> listAccountSASWithServiceResponseAsync(String resourceGroupName, String accountName, AccountSasParameters parameters) {
          if (resourceGroupName == null) {
              throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
          }
          if (accountName == null) {
              throw new IllegalArgumentException("Parameter accountName is required and cannot be null.");
          }
          if (this.client.subscriptionId() == null) {
              throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
          }
          if (parameters == null) {
              throw new IllegalArgumentException("Parameter parameters is required and cannot be null.");
          }
          if (this.client.apiVersion() == null) {
              throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
          }
          Validator.validate(parameters);
          return service.listAccountSAS(resourceGroupName, accountName, this.client.subscriptionId(), parameters, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
              .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<ListAccountSasResponseInner>>>() {
                  @Override
                  public Observable<ServiceResponse<ListAccountSasResponseInner>> call(Response<ResponseBody> response) {
                      try {
                          ServiceResponse<ListAccountSasResponseInner> clientResponse = listAccountSASDelegate(response);
                          return Observable.just(clientResponse);
                      } catch (Throwable t) {
                          return Observable.error(t);
                      }
                  }
              });
      }
docs: List SAS credentials of a storage account.
  
  @param resourceGroupName The name of the resource group within the user's subscription. The name is case insensitive.
  @param accountName The name of the storage account within the specified resource group. Storage account names must be between 3 and 24 characters in length and use numbers and lower-case letters only.
  @param parameters The parameters to provide to list SAS credentials for the storage account.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the ListAccountSasResponseInner object