code: public ServiceFuture<IPAddressAvailabilityResultInner> checkIPAddressAvailabilityAsync(String resourceGroupName, String virtualNetworkName, final ServiceCallback<IPAddressAvailabilityResultInner> serviceCallback) {
          return ServiceFuture.fromResponse(checkIPAddressAvailabilityWithServiceResponseAsync(resourceGroupName, virtualNetworkName), serviceCallback);
      }
docs: Checks whether a private IP address is available for use.
  
  @param resourceGroupName The name of the resource group.
  @param virtualNetworkName The name of the virtual network.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object