# File lib/fog/aws/requests/dynamodb/update_item.rb, line 33
        def update_item(table_name, key, attribute_updates, options = {})
          body = {
            'AttributeUpdates'  => attribute_updates,
            'Key'               => key,
            'TableName'         => table_name
          }.merge(options)

          request(
            :body     => Fog::JSON.encode(body),
            :headers  => {'x-amz-target' => 'DynamoDB_20111205.UpdateItem'}
          )
        end