code: public Observable<IntegrationAccountPartnerInner> getAsync(String resourceGroupName, String integrationAccountName, String partnerName) {
          return getWithServiceResponseAsync(resourceGroupName, integrationAccountName, partnerName).map(new Func1<ServiceResponse<IntegrationAccountPartnerInner>, IntegrationAccountPartnerInner>() {
              @Override
              public IntegrationAccountPartnerInner call(ServiceResponse<IntegrationAccountPartnerInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets an integration account partner.
  
  @param resourceGroupName The resource group name.
  @param integrationAccountName The integration account name.
  @param partnerName The integration account partner name.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the IntegrationAccountPartnerInner object