Making types available across all submodules

General Usage
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6

What you should not do is to include the same the same file twice. Otherwise it should be fine to use the modules property everywhere. For example:

julia> module MainModule
           # could be "include("typesmodule.jl")
           module TypesModule
               struct A x::Int end
           end

           using .TypesModule

           module Submodule
               export f
               using ..TypesModule: A
               f(x) = A(x) 
           end

           # now you can use Submodule normally
           using .Submodule
           a_in_Main = f(1)

       end

julia> using .MainModule

julia> MainModule.a_in_Main
Main.MainModule.TypesModule.A(1)
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