///pub mod existing {    use git_hash::ObjectId;     /// The error returned by the [`find(…)`][crate::FindExt::find()] trait methods.    #[derive(Debug, thiserror::Error)]    #[allow(missing_docs)]    pub enum Error<T: std::error::Error + 'static> {        #[error(transparent)]        Find(T),        #[error("An object with id {} could not be found", .oid)]        NotFound { oid: ObjectId },    }} ///pub mod existing_object {    use git_hash::ObjectId;     /// The error returned by the various [`find_*()`][crate::FindExt::find_commit()] trait methods.    #[derive(Debug, thiserror::Error)]    #[allow(missing_docs)]    pub enum Error<T: std::error::Error + 'static> {        #[error(transparent)]        Find(T),        #[error(transparent)]        Decode(git_object::decode::Error),        #[error("An object with id {} could not be found", .oid)]        NotFound { oid: ObjectId },        #[error("Expected object of kind {} something else", .expected)]        ObjectKind { expected: git_object::Kind },    }} ///pub mod existing_iter {    use git_hash::ObjectId;     /// The error returned by the various [`find_*_iter()`][crate::FindExt::find_commit_iter()] trait methods.    #[derive(Debug, thiserror::Error)]    #[allow(missing_docs)]    pub enum Error<T: std::error::Error + 'static> {        #[error(transparent)]        Find(T),        #[error("An object with id {} could not be found", .oid)]        NotFound { oid: ObjectId },        #[error("Expected object of kind {} something else", .expected)]        ObjectKind { expected: git_object::Kind },    }}