class Aws::Plugins::APIGAuthorizerToken::AuthTokenHandler

def call(context)
  if context.operation['authtype'] == 'custom' &&
    context.config.authorizer_token &&
    context.authorizer.placement[:location] == 'header'
    header = context.authorizer.placement[:name]
    context.http_request.headers[header] = context.config.authorizer_token
  end
  @handler.call(context)
end