class Aws::Query::Serializer

def finalize_param_list(context, param_list)
  param_list.set('Version', context.config.api.version)
  param_list.set('Action', context.operation.name)
  context.http_request.body = param_list.to_io
end

def serialize_params(context, rules, params)
  finalize_param_list(context, Builder.to_query_params(rules, params))
end

def setup_request(context)
  context.http_request.headers['Content-Type'] =
    'application/x-www-form-urlencoded; charset=utf-8'
  finalize_param_list(context, Query::ParamList.new)
end