pub trait FsFileLock {
// Required methods
fn fs_file_lock(&mut self, mode: FsFileLockMode) -> Result<()>;
fn fs_file_try_lock(&mut self, mode: FsFileLockMode) -> Result<()>;
fn fs_file_unlock(&mut self) -> Result<()>;
}pub trait FsFileLock {
// Required methods
fn fs_file_lock(&mut self, mode: FsFileLockMode) -> Result<()>;
fn fs_file_try_lock(&mut self, mode: FsFileLockMode) -> Result<()>;
fn fs_file_unlock(&mut self) -> Result<()>;
}