/// A function for use in [`crate::file::ReferenceExt::peel_to_id_in_place()`] to indicate no peeling should happen.pub fn none(    _id: git_hash::ObjectId,    _buf: &mut Vec<u8>,) -> Result<Option<(git_object::Kind, &[u8])>, std::convert::Infallible> {    Ok(Some((git_object::Kind::Commit, &[])))} ///pub mod to_id {    use std::path::PathBuf;     use git_object::bstr::BString;    use quick_error::quick_error;     use crate::file;     quick_error! {        /// The error returned by [`crate::file::ReferenceExt::peel_to_id_in_place()`].        #[derive(Debug)]        #[allow(missing_docs)]        pub enum Error {            Follow(err: file::find::existing::Error) {                display("Could not follow a single level of a symbolic reference")                from()                source(err)            }            Cycle(start_absolute: PathBuf){                display("Aborting due to reference cycle with first seen path being '{}'", start_absolute.display())            }            DepthLimitExceeded { max_depth: usize } {                display("Refusing to follow more than {} levels of indirection", max_depth)            }            Find(err: Box<dyn std::error::Error + Send + Sync + 'static>) {                display("An error occurred when trying to resolve an object a refererence points to")                from()                source(&**err)            }            NotFound{oid: git_hash::ObjectId, name: BString} {                display("Object {} as referred to by '{}' could not be found", oid, name)            }        }    }}