Method rotate_left

packages/server/src/android.rs:578–580

(&self, id: &str)

    }

    pub fn rotate_left(&self, id: &str) -> Result<(), AppError> {
        self.rotate_by_quarter_turns(id, -1)
    }

    fn rotate_by_quarter_turns(&self, id: &str, delta: i16) -> Result<(), AppError> {
        let serial = self.serial_for_id(id)?;