def begin_failover(source_device_name, parameters, resource_group_name, manager_name, custom_headers:nil)
      response = begin_failover_async(source_device_name, parameters, resource_group_name, manager_name, custom_headers:custom_headers).value!
      nil
    end
def begin_failover(source_device_name, parameters, resource_group_name, manager_name, custom_headers:nil)
      response = begin_failover_async(source_device_name, parameters, resource_group_name, manager_name, custom_headers:custom_headers).value!
      nil
    end
Failovers a set of volume containers from a specified source device to a
 target device.

 @param source_device_name [String] The source device name on which failover
 is performed.
 @param parameters [FailoverRequest] FailoverRequest containing the source
 device and the list of volume containers to be failed over.
 @param resource_group_name [String] The resource group name
 @param manager_name [String] The manager name
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.