trait Store<I> where I: for<'a> IntoIterator<Item = &'a str> {
    fn query_valid_paths(&mut self, iter: I) -> Vec<String>;
}

struct Bar<I> { vec: Vec<Box<dyn Store<I>>> }
struct Foo {}

impl<I> Store<I> for Foo  where I: for<'a> IntoIterator<Item = &'a str> {
    fn query_valid_paths(&mut self, iter: I) -> Vec<String> {
        iter.into_iter().map(|x| x.to_string()).collect()
    }
}

fn main() {
    let something = "Something";
    let mut foo = Foo {};
    //println!("{:?}", foo.query_valid_paths(something.iter()));
}