code: public Observable<ContentKeyPolicyInner> getAsync(String resourceGroupName, String accountName, String contentKeyPolicyName) {
          return getWithServiceResponseAsync(resourceGroupName, accountName, contentKeyPolicyName).map(new Func1<ServiceResponse<ContentKeyPolicyInner>, ContentKeyPolicyInner>() {
              @Override
              public ContentKeyPolicyInner call(ServiceResponse<ContentKeyPolicyInner> response) {
                  return response.body();
              }
          });
      }
docs: Get a Content Key Policy.
  Get the details of a Content Key Policy in the Media Services account.
  
  @param resourceGroupName The name of the resource group within the Azure subscription.
  @param accountName The Media Services account name.
  @param contentKeyPolicyName The Content Key Policy name.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the ContentKeyPolicyInner object