use std::{convert::Infallible, io}; use crate::{Blob, BlobRef, Kind}; impl<'a> crate::WriteTo for BlobRef<'a> {    /// Write the blobs data to `out` verbatim.    fn write_to(&self, mut out: impl io::Write) -> io::Result<()> {        out.write_all(self.data)    }     fn kind(&self) -> Kind {        Kind::Blob    }} impl crate::WriteTo for Blob {    /// Write the blobs data to `out` verbatim.    fn write_to(&self, out: impl io::Write) -> io::Result<()> {        self.to_ref().write_to(out)    }     fn kind(&self) -> Kind {        Kind::Blob    }} impl Blob {    /// Provide a `BlobRef` to this owned blob    pub fn to_ref(&self) -> BlobRef<'_> {        BlobRef { data: &self.data }    }} impl<'a> BlobRef<'a> {    /// Instantiate a `Blob` from the given `data`, which is used as-is.    pub fn from_bytes(data: &[u8]) -> Result<BlobRef<'_>, Infallible> {        Ok(BlobRef { data })    }}