isUniformRNG

[Nick Sabalausky via Digitalmars-d]

In std.random, is the "isUniformRNG" intended to determine whether the 
given type is *some* RNG or just a *specific* form of RNG? Because I 
don't see any "isRNG" that's more general.

More importantly, should a crypto RNG count as "isUniformRNG"?