if (expires != null && expires.getTime() < systemHelper.getCurrentTimeAsLong()) {
                    final Object idValue = document.get(fessConfig.getIndexFieldId());
                    if (idValue != null && !indexingHelper.deleteDocument(searchEngineClient, idValue.toString())) {
                        logger.debug("Failed to delete expired document: {}", url);
                    }
                    return true;

        final List<String> docIdList = new ArrayList<>();
        for (final Map<String, Object> inputDoc : docList) {
            final Object idValue = inputDoc.get(fessConfig.getIndexFieldId());
            if (idValue == null) {
                continue;
            }

            final Object configIdValue = inputDoc.get(fessConfig.getIndexFieldConfigId());

pkg go/types, method (TypeAndValue) IsBuiltin() bool
pkg go/types, method (TypeAndValue) IsNil() bool
pkg go/types, method (TypeAndValue) IsType() bool
pkg go/types, method (TypeAndValue) IsValue() bool
pkg go/types, method (TypeAndValue) IsVoid() bool
pkg go/types, type Array struct
pkg go/types, type Basic struct
pkg go/types, type BasicInfo int
pkg go/types, type BasicKind int

pkg database/sql, type Tx struct
pkg database/sql, var ErrNoRows error
pkg database/sql, var ErrTxDone error
pkg database/sql/driver, func IsScanValue(interface{}) bool
pkg database/sql/driver, func IsValue(interface{}) bool
pkg database/sql/driver, method (NotNull) ConvertValue(interface{}) (Value, error)
pkg database/sql/driver, method (Null) ConvertValue(interface{}) (Value, error)