code: public ServiceFuture<Void> beginDeleteAsync(String resourceGroupName, String managedClusterName, String agentPoolName, final ServiceCallback<Void> serviceCallback) {
          return ServiceFuture.fromResponse(beginDeleteWithServiceResponseAsync(resourceGroupName, managedClusterName, agentPoolName), serviceCallback);
      }
docs: Deletes an agent pool.
  Deletes the agent pool in the specified managed cluster.
  
  @param resourceGroupName The name of the resource group.
  @param managedClusterName The name of the managed cluster resource.
  @param agentPoolName The name of the agent pool.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object