code: public Observable<Page<DscConfigurationInner>> listByAutomationAccountAsync(final String resourceGroupName, final String automationAccountName) {
          return listByAutomationAccountWithServiceResponseAsync(resourceGroupName, automationAccountName)
              .map(new Func1<ServiceResponse<Page<DscConfigurationInner>>, Page<DscConfigurationInner>>() {
                  @Override
                  public Page<DscConfigurationInner> call(ServiceResponse<Page<DscConfigurationInner>> response) {
                      return response.body();
                  }
              });
      }
docs: Retrieve a list of configurations.
  
  @param resourceGroupName Name of an Azure Resource group.
  @param automationAccountName The name of the automation account.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the PagedList&lt;DscConfigurationInner&gt; object