def update(resource_group_name, private_zone_name, parameters, if_match:nil, custom_headers:nil)
      response = update_async(resource_group_name, private_zone_name, parameters, if_match:if_match, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
def update(resource_group_name, private_zone_name, parameters, if_match:nil, custom_headers:nil)
      response = update_async(resource_group_name, private_zone_name, parameters, if_match:if_match, custom_headers:custom_headers).value!
      response.body unless response.nil?
    end
Updates a Private DNS zone. Does not modify virtual network links or DNS
 records within the zone.

 @param resource_group_name [String] The name of the resource group.
 @param private_zone_name [String] The name of the Private DNS zone (without a
 terminating dot).
 @param parameters [PrivateZone] Parameters supplied to the Update operation.
 @param if_match [String] The ETag of the Private DNS zone. Omit this value to
 always overwrite the current zone. Specify the last-seen ETag value to
 prevent accidentally overwriting any concurrent changes.
 @param custom_headers [Hash{String => String}] A hash of custom headers that
 will be added to the HTTP request.

 @return [PrivateZone] operation results.