Fiber!(SparseVBL(Element(0)) constructors:
initialized fiber: Fiber(SparseVBL{Int32, Int32}(Element{0.0, Float64, Int32, Vector{Float64}}([2.0, 2.0, 3.0, 3.0]), 6, [1, 3], [3, 6], [1, 3, 5]))
initialized fiber: Fiber(SparseVBL{Int16, Int32}(Element{0.0, Float64, Int32, Vector{Float64}}([2.0, 2.0, 3.0, 3.0]), 6, [1, 3], [3, 6], [1, 3, 5]))
sized fiber: Fiber(SparseVBL{Int32, Int32}(Element{0.0, Float64, Int32, Vector{Float64}}([]), 7, [1, 1], [], [1]))
sized fiber: Fiber(SparseVBL{Int16, Int32}(Element{0.0, Float64, Int32, Vector{Float64}}([]), 7, [1, 1], [], [1]))
empty fiber: Fiber(SparseVBL{Int32, Int32}(Element{0.0, Float64, Int32, Vector{Float64}}([]), 0, [1, 1], [], [1]))
empty fiber: Fiber(SparseVBL{Int16, Int32}(Element{0.0, Float64, Int32, Vector{Float64}}([]), 0, [1, 1], [], [1]))

