Function compose_chain 

pub fn compose_chain(
    patches: &[Patch],
    author: &str,
    message: &str,
) -> Result<ComposeResult, ComposeError>

Compose a sequence of patches into a single equivalent patch.

Patches must form a linear chain: each patch’s first parent is the previous patch. Unlike compose, this does not require strict ancestry verification between intermediate composed results and the next patch, since the intermediate composed patch has a new ID.