def validate(response)
error_klass = case response.code
when 400 then Error::BadRequest
when 401 then Error::Unauthorized
when 403 then Error::Forbidden
when 404 then Error::NotFound
when 405 then Error::MethodNotAllowed
when 409 then Error::Conflict
when 422 then Error::Unprocessable
when 500 then Error::InternalServerError
when 502 then Error::BadGateway
when 503 then Error::ServiceUnavailable
end
fail error_klass.new(response) if error_klass
parsed = response.parsed_response
parsed.client = self if parsed.respond_to?(:client=)
parsed.parse_headers!(response.headers) if parsed.respond_to?(:parse_headers!)
parsed
end