def start(resource_group_name, vm_scale_set_name, vm_instance_ids:nil, custom_headers:nil)
      response = start_async(resource_group_name, vm_scale_set_name, vm_instance_ids:vm_instance_ids, custom_headers:custom_headers).value!
      nil
    end
def start(resource_group_name, vm_scale_set_name, vm_instance_ids:nil, custom_headers:nil)
      response = start_async(resource_group_name, vm_scale_set_name, vm_instance_ids:vm_instance_ids, custom_headers:custom_headers).value!
      nil
    end
Starts one or more virtual machines in a VM scale set.

 @param resource_group_name [String] The name of the resource group.
 @param vm_scale_set_name [String] The name of the VM scale set.
 @param vm_instance_ids [VirtualMachineScaleSetVMInstanceIDs] A list of
 virtual machine instance IDs from the VM scale set.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.