use crate::state; impl crate::Repository {    /// Returns the status of an in progress operation on a repository or [`None`]    /// if no operation is currently in progress.    ///    /// Note to be confused with the repositories 'status'.    pub fn state(&self) -> Option<state::InProgress> {        let git_dir = self.path();         // This is modeled on the logic from wt_status_get_state in git's wt-status.c and        // ps1 from git-prompt.sh.         if git_dir.join("rebase-apply/applying").is_file() {            Some(state::InProgress::ApplyMailbox)        } else if git_dir.join("rebase-apply/rebasing").is_file() {            Some(state::InProgress::Rebase)        } else if git_dir.join("rebase-apply").is_dir() {            Some(state::InProgress::ApplyMailboxRebase)        } else if git_dir.join("rebase-merge/interactive").is_file() {            Some(state::InProgress::RebaseInteractive)        } else if git_dir.join("rebase-merge").is_dir() {            Some(state::InProgress::Rebase)        } else if git_dir.join("CHERRY_PICK_HEAD").is_file() {            if git_dir.join("sequencer/todo").is_file() {                Some(state::InProgress::CherryPickSequence)            } else {                Some(state::InProgress::CherryPick)            }        } else if git_dir.join("MERGE_HEAD").is_file() {            Some(state::InProgress::Merge)        } else if git_dir.join("BISECT_LOG").is_file() {            Some(state::InProgress::Bisect)        } else if git_dir.join("REVERT_HEAD").is_file() {            if git_dir.join("sequencer/todo").is_file() {                Some(state::InProgress::RevertSequence)            } else {                Some(state::InProgress::Revert)            }        } else {            None        }    }}