class Seahorse::Client::Http::Request

def endpoint=(endpoint)
  endpoint = URI.parse(endpoint) if endpoint.is_a?(String)
  if endpoint.nil? or URI::HTTP === endpoint or URI::HTTPS === endpoint
    @endpoint = endpoint
  else
    msg = "invalid endpoint, expected URI::HTTP, URI::HTTPS, or nil, "
    msg << "got #{endpoint.inspect}"
    raise ArgumentError, msg
  end
end