Can I call the default opAssign after overloading opAssign?

[Rob T]

My understanding is that a struct will have a default postblit 
opAssign. What I want to know is if I can call the default 
opAssign after overriding it, or is it inaccessible?

I know that I do not have to execute the default after 
overriding, but if I can call it, I'd like to know because in 
some cases it may be useful to run the default. So this is just a 
general knowledge kind of question at this point.

--rt