# File lib/aws/s3/client.rb, line 1648
        def require_acl! options
          acl_options = [
            :acl,
            :grant_read,
            :grant_write,
            :grant_read_acp,
            :grant_write_acp,
            :grant_full_control,
            :access_control_policy,
          ]
          unless options.keys.any?{|opt| acl_options.include?(opt) }
            msg = "missing a required ACL option, must provide an ACL " +
                  "via :acl, :grant_* or :access_control_policy"
            raise ArgumentError, msg
          end
        end