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// check-pass
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#![feature(return_position_impl_trait_in_trait)]
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trait Foo {}
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impl Foo for () {}
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trait ThreeCellFragment {
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fn ext_cells<'a>(&'a self) -> impl Foo + 'a {
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self.ext_adjacent_cells()
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}
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fn ext_adjacent_cells<'a>(&'a self) -> impl Foo + 'a;
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}
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fn main() {}
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