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// Copyright 2025 Google LLC
// SPDX-License-Identifier: Apache-2.0
use std::any::Any;

#[derive(Debug)]
pub struct ThisImplementsAny;

fn take_any<T: Any>(t: &T) {}

fn main() {
    let is_an_any = ThisImplementsAny;
    take_any(&is_an_any);

    let dyn_any: &dyn Any = &is_an_any;
    dbg!(dyn_any.type_id());
    dbg!(dyn_any.is::<ThisImplementsAny>());
    let is_downcast: Option<&ThisImplementsAny> = dyn_any.downcast_ref();
    dbg!(is_downcast);
}