ActionScript 3 :: Possible To Have Variable With Specific Class Reference Type?

Coming from a Delphi background, I am used to be able to have class references/pointers of a specific superclass, example:
#!pas
var
niceVar: class of TClassOne; // Delphi style
badVar: class; // Only? allowed AS3 style to the best of my knowledge
begin
niceVar := x;
badVar := x;
niceVar.staticMethodSpecificToTClassOne;
TClassOne(badVar).staticMethodSpecificToTClassOne;
end;

What this means is that I don't have to cast my variables to a specific class; they are of the correct Class beforehand. This also means that compile-time checking can be performed to make sure proper members are being accessed and I don't have to check that niceVar is in fact of class TClassOne if niceVar was passed to a method.
[Code] .....

So just like a variable storing an object can be for a specific type and only objects of that class or subclasses of it are accepted, so to does "class of AClass" allow for variables of a specific class to be limited to references to a certain class or those inherited from it. I hope that makes sense somehow; I don't know of specific nomenclature for the whole "class of SuperClass" thing. So I'd like to do the same in AS3 as having variables/properties/parameters of type Class does not cut the mustard; its kind of like having all object variables/properties/parameters simply being Object instead of their proper, specific type.

What I'd like to be able to do
public function set recordClass(aRecordClass: TRecordClass): void {
_recordInstance = new aRecordClass(this); // Compiler will know that I am creating a TRecord
}