How to use the react-native-app-auth.onlyAuthorize function in react-native-app-auth

onlyAuthorize = async () => {
    try {
      const authResult = await onlyAuthorize(config);

      this.animateState(
        {
          authResult,
          tokenResult: null
        },
        500
      );

      this.setState({
        authResult,
        tokenResult: null
      });
    } catch (error) {
      Alert.alert('Failed to authorize', error.message);
    }