use std::path::PathBuf; use crate::store::WriteReflog; mod error {    use quick_error::quick_error;     quick_error! {        /// The error returned by [crate::Store::at()].        #[derive(Debug)]        #[allow(missing_docs)]        pub enum Error {            Io(err: std::io::Error) {                display("There was an error accessing the store's directory")                from()                source(err)            }        }    }} pub use error::Error; use crate::file; impl crate::Store {    /// Create a new store at the given location, typically the `.git/` directory.    ///    /// `object_hash` defines the kind of hash to assume when dealing with refs.    pub fn at(        git_dir: impl Into<PathBuf>,        reflog_mode: WriteReflog,        object_hash: git_hash::Kind,    ) -> Result<Self, Error> {        // for now, just try to read the directory - later we will do that naturally as we have to figure out if it's a ref-table or not.        let git_dir = git_dir.into();        std::fs::read_dir(&git_dir)?;        Ok(crate::Store {            inner: crate::store::State::Loose {                store: file::Store::at(git_dir, reflog_mode, object_hash),            },        })    }}