def validate_exclusive_use_of_samesite_enforcement!(attribute)
      if (intersection = (config[:samesite][:lax].fetch(attribute, []) & config[:samesite][:strict].fetch(attribute, []))).any?
        raise CookiesConfigError.new("samesite cookie config is invalid, cookie(s) #{intersection.join(', ')} cannot be enforced as lax and strict")
      end
    end
def validate_exclusive_use_of_samesite_enforcement!(attribute)
      if (intersection = (config[:samesite][:lax].fetch(attribute, []) & config[:samesite][:strict].fetch(attribute, []))).any?
        raise CookiesConfigError.new("samesite cookie config is invalid, cookie(s) #{intersection.join(', ')} cannot be enforced as lax and strict")
      end
    end
validate exclusivity of only and except members within strict and lax