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Perform class method on Class object

I've got an instance of the Class class, obtained by calling the class method (example below). With that instance i'd like to call a class ( + .. ) method on that.

Callee

Class foo = [FooBar class];
SEL selector = @selector(doSomething:)
// Call somehow?

FooBar Definition

@implementation FooBar

+ (void)doSomething:(id)argument { .. }

@end

Is there any way of doing this?

Thanks.

Class foo = [FooBar class];
[foo doSomething];

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