class EventMachine::WebMockHttpClient

def get_response_cookie(name)
  name = name.to_s
  raw_cookie = response_header.cookie
  raw_cookie = [raw_cookie] if raw_cookie.is_a? String
  cookie = raw_cookie.detect { |c| c.start_with? name }
  cookie and cookie.split('=', 2)[1]
end