### Spawns a new asynchronous task, returning a JoinHandle for it. ```rust
async fn main() -> Result<(), Box
Ok(())
}
### Runs the provided closure on a thread where blocking is acceptable.
rust
async fn main() -> Result<(), Box
Ok(())
}
### executed on the async code in sync
rust
fn main(){
async fn demo(){
println!("demo");
}
poee::sync_fn(demo());
}
```