get_*_dense_index() do not return expected value?

[alaindanet]

get_producers_dense_index() and get_consumers_dense_index() do not return the expected values.

While get_producers_sparse_index() and get_consumers_sparse_index() return the right indices.

vegan = Foodweb([:ours => :plant])
m = default_model(vegan)

# Ours is one, plant is two
julia> get_species_names(m)
2-element EcologicalNetworksDynamics.SpeciesNames:
 :ours
 :plant

# *_dense_index is wrong
julia> get_producers_dense_index(m)
OrderedCollections.OrderedDict{Symbol, Int64} with 1 entry:
  :plant => 1
julia> get_producers_sparse_index(m)
OrderedCollections.OrderedDict{Symbol, Int64} with 1 entry:
  :plant => 2

vegan = Foodweb([0 0; 0 1]);
m = default_model(vegan, Species([:plant, :ours]));

# Plant is one, ours is two
julia> get_species_names(m)
2-element EcologicalNetworksDynamics.SpeciesNames:
 :plant
 :ours

# *_dense_index is wrong
julia> get_consumers_dense_index(m)
OrderedCollections.OrderedDict{Symbol, Int64} with 1 entry:
  :ours => 1

julia> get_consumers_sparse_index(m)
OrderedCollections.OrderedDict{Symbol, Int64} with 1 entry:
  :ours => 2

It is a very minor issue I guess.