Enumerate doesn't work with tcollect

[mrufsvold]

Enumerate doesn't increment when you use it with a tcollect

julia> a = collect(1:5);

julia> a |> Enumerate() |> collect
5-element Vector{Tuple{Int64, Int64}}:
 (1, 1)
 (2, 2)
 (3, 3)
 (4, 4)
 (5, 5)

julia> a |> Enumerate() |> tcollect
5-element Vector{Tuple{Int64, Int64}}:
 (1, 1)
 (1, 2)
 (1, 3)
 (1, 4)
 (1, 5)

If there is a technical reason that this can't work, then I think it should be documented that Enumerate doesn't work (or maybe list all the Transducers that are known to work with tcollect).