throw new IllegalStateException("Subject not found");
            });
        }

        @Override
        public OptionalThing<String> getSavedPlainText() {
            return OptionalThing.ofNullable(plainText, () -> {
                throw new IllegalStateException("Plain text not found");
            });
        }

        @Override

        buf.append(StringEscapeUtils.escapeJson(discloser.getSavedSubject().orElse(StringUtil.EMPTY).trim()));
        buf.append(LF).append("```");
        buf.append(LF).append(StringEscapeUtils.escapeJson(discloser.getSavedPlainText().orElse(StringUtil.EMPTY).trim()));
        buf.append(LF).append("```\"}");
        return buf.toString();
    }

    /**
     * Sends a notification to Google Chat.
     *