pub trait ChunkStorage: Sync + Send {
// Required methods
fn read_chunk_content(
&self,
chunk: &ChunkHash,
) -> Result<Box<dyn Read + Send>>;
fn write_chunk_content(
&self,
chunk: &ChunkHash,
content: Box<dyn Read + Send>,
) -> Result<()>;
fn delete_chunk_content(&self, chunk: &ChunkHash) -> Result<()>;
// Provided method
fn path_from_chunk(&self, chunk: &ChunkHash) -> PathBuf { ... }
}