Function write_branch 

pub fn write_branch(
    void_dir: &Utf8Path,
    name: &str,
    commit_cid: &CommitCid,
) -> Result<()>

Write a branch ref.

Errors

Returns VoidError::InvalidBranchName if name is invalid, VoidError::CidError if CID is invalid, or VoidError::Io if write fails.