import locality with function parameters

[Carl Sturtivant]

Hello,

I seem to recall that there is surprising template to import a 
module and get a type from it inside the declaration of the type 
of a parameter to a function, so that the module need not be 
imported outside of the function definition. I think there was a 
blog article some years ago about this where there was some 
indication that this or something with equivalent effect would be 
incorporated into D in some way.

How do I define a function with a parameter that is a type in an 
outside module while keeping module import local to that 
definition?