code: public ServiceFuture<InboundNatRuleInner> getAsync(String resourceGroupName, String loadBalancerName, String inboundNatRuleName, String expand, final ServiceCallback<InboundNatRuleInner> serviceCallback) {
          return ServiceFuture.fromResponse(getWithServiceResponseAsync(resourceGroupName, loadBalancerName, inboundNatRuleName, expand), serviceCallback);
      }
docs: Gets the specified load balancer inbound nat rule.
  
  @param resourceGroupName The name of the resource group.
  @param loadBalancerName The name of the load balancer.
  @param inboundNatRuleName The name of the inbound nat rule.
  @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