52     InvalidSize(usize),
56     EntryOutOfBounds(Entry, Range<usize>, Range<usize>),
89     pub fn total_size(&self) -> usize {  in total_size()  argument
90         self.total_size as usize  in total_size()
93     pub fn body_lowest_bound(&self) -> Result<usize> {  in body_lowest_bound()  argument
105     pub fn entry_count(&self) -> Result<usize> {  in entry_count()  argument
118         Ok(last_entry as usize + 1)  in entry_count()
133     const COUNT: usize = Self::_VARIANT_COUNT as usize;
172     start: usize,
177     pub fn new(start: usize, size: usize) -> Option<Self> {  in new()  argument
184     fn end(&self) -> usize {  in end()  argument
188     fn len(&self) -> usize {  in len()  argument
192     fn as_range(&self) -> Range<usize> {  in as_range()  argument
206         const HEADER_SIZE: usize = mem::size_of::<Header>();  in new()
250             let Some(header_entry) = header_entries.get(entry as usize) else { continue };  in new()
264             ranges[entry as usize] = NonEmptyRange::new(  in new()
270         ranges[Entry::Bcc as usize].ok_or(Error::MissingEntry(Entry::Bcc))?;  in new()