use bitflags::bitflags;bitflags! {    /// The kind of file of an entry.    pub struct Mode: u32 {        /// directory (only used for sparse checkouts), equivalent to a tree        const DIR = 0o040000;        /// regular file        const FILE = 0o100644;        /// regular file, executable        const FILE_EXECUTABLE = 0o100755;        /// Symbolic link        const SYMLINK = 0o120000;        /// A git commit for submodules        const COMMIT = 0o160000;    }} impl Mode {    /// Return true if this is a sparse entry, as it points to a directory which usually isn't what an unsparse index tracks.    pub fn is_sparse(&self) -> bool {        *self == Self::DIR    }}