Function mz_compute::render::join::delta_join::dispatch_build_update_stream_trace

fn dispatch_build_update_stream_trace<G, T>(
    trace: SpecializedArrangementImport<G, T>,
    as_of: Antichain<Timestamp>,
    source_relation: usize,
    initial_closure: JoinClosure
) -> (Collection<G, Row, Diff>, Collection<G, DataflowError, Diff>)where
    G: Scope,
    T: Timestamp + Lattice + Columnation,
    G::Timestamp: Lattice + RenderTimestamp + Refines<T> + Columnation,

Dispatches building of a delta path update stream by to trace type specialization.