[Containers] implement multi-arg `eachindex` about jump.jl HOT 4 CLOSED

julia> @variable(model, u[i = 1:2, j = i:3])
JuMP.Containers.SparseAxisArray{VariableRef, 2, Tuple{Int64, Int64}} with 5 entries:
  [1, 1]  =  u[1,1]
  [1, 2]  =  u[1,2]
  [1, 3]  =  u[1,3]
  [2, 2]  =  u[2,2]
  [2, 3]  =  u[2,3]

julia> @variable(model, w[i = 1:2, j = i:3])
JuMP.Containers.SparseAxisArray{VariableRef, 2, Tuple{Int64, Int64}} with 5 entries:
  [1, 1]  =  w[1,1]
  [1, 2]  =  w[1,2]
  [1, 3]  =  w[1,3]
  [2, 2]  =  w[2,2]
  [2, 3]  =  w[2,3]

julia> [(I for I in eachindex(e,f)]^C

julia> Euclidean()(u, w)
ERROR: `Base.size` is not implemented for `SparseAxisArray` because although it is a subtype of `AbstractArray`, it is conceptually closer to a dictionary with `N`-dimensional keys. If you encounter this error and you didn't call `size` explicitly, it is because you called a method that is unsupported for `SparseAxisArray`s. Consult the JuMP documentation for a list of supported operations.
Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:35
 [2] size(#unused#::JuMP.Containers.SparseAxisArray{VariableRef, 2, Tuple{Int64, Int64}})
   @ JuMP.Containers ~/.julia/packages/JuMP/0X8Yo/src/Containers/SparseAxisArray.jl:58
 [3] axes(A::JuMP.Containers.SparseAxisArray{VariableRef, 2, Tuple{Int64, Int64}})
   @ Base ./abstractarray.jl:98
 [4] _evaluate(d::Euclidean, a::JuMP.Containers.SparseAxisArray{VariableRef, 2, Tuple{Int64, Int64}}, b::JuMP.Containers.SparseAxisArray{VariableRef, 2, Tuple{Int64, Int64}}, #unused#::Nothing)
   @ Distances ~/.julia/packages/Distances/PvoXa/src/metrics.jl:251
 [5] (::Euclidean)(a::JuMP.Containers.SparseAxisArray{VariableRef, 2, Tuple{Int64, Int64}}, b::JuMP.Containers.SparseAxisArray{VariableRef, 2, Tuple{Int64, Int64}})
   @ Distances ~/.julia/packages/Distances/PvoXa/src/metrics.jl:328
 [6] top-level scope
   @ REPL[72]:1