.forEach(s -> messages.addErrorsPropertyRequired(s, s)));
            }
            if (!fessConfig.validateIndexDateFields(doc)) {
                throwError.accept(messages -> fessConfig.invalidIndexDateFields(doc).stream().map(s -> "doc." + s)
                        .forEach(s -> messages.addErrorsPropertyTypeDate(s, s)));
            }
            if (!fessConfig.validateIndexIntegerFields(doc)) {