Extract Interface Refactoring and Generics

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Alexander Kiel wrote:

Hello,

I have a class

class Foo {
}

and a collection

Collection<Foo> foos;

If I want to perform the refactoring "Extract Interface" with "rename orginal class and use interface where possible" IDEA 3489 do not notice the Collection<Foo>. It produces following code:

class FooImpl implements Foo {
}

Collection<FooImpl> foos;

I want a Collection<Foo>.