pub trait ClosureArg {
    type Output: Sized;
}

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impl ClosureArg for PCWSTR

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impl ClosureArg for BOOL

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type Output = bool

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impl ClosureArg for HRESULT

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type Output = Result<(), Error>

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impl<I: Interface> ClosureArg for Option<I>

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type Output = Option<I>

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