Access stream state from a projection

Hi,

I have a projection to generate state as follows:

fromStream(‘wilbur-departures’).when({

$init: (state) => {

    return {
        departures: {},
        sequenceNumber: 0
    };

},
'flightUpdated': (state, event) => {

    state.departures[event.data.flightNumber] = event.data;
    state.sequenceNumber = event.sequenceNumber;

}

}).transformBy(state => {

const result = {
    sequenceNumber:state.sequenceNumber,
    departures:[],
};

Object.keys(state.departures).forEach((key) => {

    const departure = state.departures[key];

    result.departures.push(departure);

});

return result;

});

``

I would like to access another streams metadate to add some more info to the projection result.

Is this at all possible?

Thanks in advance, Arjen