Queries with different returns without losing type

[bCamba]

I have a query here which is quite complex and I won't go into much detail because I think there is no need. The point here is at some point in the query I want to continue doing more queries if the stuff I am querying exists, if not I want just to return what I had already.

I am doing this with a coalesce method but the problem with this is I lose my types (return becomes object[]).

    ...bunch of queries
    .Coalesce(__ => __
        ...more queries
        .As((__, aggregation) => __
            .Select(shipEvent,
                hasProductInstance,
                productInstance,
                shippedToEdge,
                sender,
                aggregation)), 
            __ => __
            .Select(shipEvent,
                hasProductInstance,
                productInstance,
                shippedToEdge,
                sender)))))));

Is there a better way to do that or a way that I can do stuff like this without losing the types? I wonder if it is possible to select a null vertex in the second traversal of the coalesce. Something like:

    ...bunch of queries
    .Coalesce(__ => __
        ...more queries
        .As((__, aggregation) => __
            .Select(shipEvent,
                hasProductInstance,
                productInstance,
                shippedToEdge,
                sender,
                aggregation)), 
            __ => __
            .Select(shipEvent,
                hasProductInstance,
                productInstance,
                shippedToEdge,
                sender,
                null)))))));

I am guessing there is a way to do that with something like .ForceVertex() or .ForceValueTuple() but I am not sure how to use that