30 pub type Result<T> = std::result::Result<T, FlashError>;  typedef
55     fn erase(&mut self, offset: usize, len: usize) -> Result<()>;  in erase()
56     fn write(&mut self, offset: usize, payload: &[u8]) -> Result<()>;  in write()
57     fn read(&self, offset: usize, data: &mut [u8]) -> Result<()>;  in read()
59     fn add_bad_region(&mut self, offset: usize, len: usize, rate: f32) -> Result<()>;  in add_bad_region()
125     pub fn write_file<P: AsRef<Path>>(&self, path: P) -> Result<()> {  in write_file()
152     fn erase(&mut self, offset: usize, len: usize) -> Result<()> {  in erase()
182     fn write(&mut self, offset: usize, payload: &[u8]) -> Result<()> {  in write()
220     fn read(&self, offset: usize, data: &mut [u8]) -> Result<()> {  in read()
232     fn add_bad_region(&mut self, offset: usize, len: usize, rate: f32) -> Result<()> {  in add_bad_region()
368     impl<T> EChecker for Result<T> {  implementation