[sv-ec] out-of-scope definition of typedef, nested class.

Is there a way for defining nested class out-of-scope - similarly to extern
methods?
 
Is below legal?
 
-------- classA.h -----
 
class A;
 
    typedef class B;
 
endclass
 
-----------------------------
 
 
------ classA.sv ----------
 
`include "classA.h"
 
class A::B
 
endclass
 
--------------------------------
 
DANiel

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