Function exifsd::soi

pub fn soi<'a, I: 'a>() -> impl Parser<Input = I, Output = &'a [u8]> + 'a where
    I: RangeStream<Item = u8, Range = &'a [u8]>,
    I::Error: ParseError<I::Item, I::Range, I::Position>, 

Parses Start of Image marker.