Fiber!(Dense(SparseCOO{1}(Element(zero))) representation:

array: [0.0 0.0 0.0 0.0 0.0; 0.0 0.0 0.0 0.0 0.0; 0.0 0.0 0.0 0.0 0.0; 0.0 0.0 0.0 0.0 0.0; 0.0 0.0 0.0 0.0 0.0]
fiber: Fiber(Dense{Int64}(SparseCOO{1, Tuple{Int64}, Int64}(Element{0.0, Float64, Int64, Vector{Float64}}([]), (5,), (Int64[], ), [1, 1, 1, 1, 1, 1]), 5))
array: [1.0 1.0 1.0 1.0 1.0; 1.0 1.0 1.0 1.0 1.0; 1.0 1.0 1.0 1.0 1.0; 1.0 1.0 1.0 1.0 1.0; 1.0 1.0 1.0 1.0 1.0]
fiber: Fiber(Dense{Int64}(SparseCOO{1, Tuple{Int64}, Int64}(Element{0.0, Float64, Int64, Vector{Float64}}([1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]), (5,), (Int64[1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5], ), [1, 6, 11, 16, 21, 26]), 5))
array: [0.0 1.0 2.0 2.0; 0.0 0.0 0.0 0.0; 1.0 1.0 2.0 0.0; 0.0 0.0 0.0 0.0]
fiber: Fiber(Dense{Int64}(SparseCOO{1, Tuple{Int64}, Int64}(Element{0.0, Float64, Int64, Vector{Float64}}([1.0, 1.0, 1.0, 2.0, 2.0, 2.0]), (4,), (Int64[3, 1, 3, 1, 3, 1], ), [1, 2, 4, 6, 7]), 4))

