code: public ServiceFuture<PublicIPAddressInner> getByResourceGroupAsync(String resourceGroupName, String publicIpAddressName, String expand, final ServiceCallback<PublicIPAddressInner> serviceCallback) {
          return ServiceFuture.fromResponse(getByResourceGroupWithServiceResponseAsync(resourceGroupName, publicIpAddressName, expand), serviceCallback);
      }
docs: Gets the specified public IP address in a specified resource group.
  
  @param resourceGroupName The name of the resource group.
  @param publicIpAddressName The name of the subnet.
  @param expand Expands referenced resources.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object