Check parent on inheritance - Dlang - D language

app.d

module test;
import std.stdio;
import std.traits;

class A {}
class B : A { }

void main() {
    alias Bases = BaseClassesTuple!B;
    writeln(Bases.stringof); /* prints "(A, Object)" */
    static assert(Bases.length > 0);
    alias T = Bases[0];
    auto t = new T;
}