How to use the react-native-nfc-manager.Ndef.isType function in react-native-nfc-manager

_parseUri = (tag) => {
        try {
            if (Ndef.isType(tag.ndefMessage[0], Ndef.TNF_WELL_KNOWN, Ndef.RTD_URI)) {
                return Ndef.uri.decodePayload(tag.ndefMessage[0].payload);
            }
        } catch (e) {
            console.log(e);
        }
        return null;
    }

_parseText = (tag) => {
        try {
            if (Ndef.isType(tag.ndefMessage[0], Ndef.TNF_WELL_KNOWN, Ndef.RTD_TEXT)) {
                return Ndef.text.decodePayload(tag.ndefMessage[0].payload);
            }
        } catch (e) {
            console.log(e);
        }
        return null;
    }
}