/// Returns a span pointing to the start of self, spanning no bytes.
Returns a span pointing to the start of self, spanning no bytes.
Returns a span pointing to the start of self spanning no bytes .
pub fn start(self) -> Self {
        Self {
            start: self.start,
            end: self.start,
        }
    }
pub fn start ( self ) -> Self { Self { start : self . start , end : self . start , } }
Returns a span pointing to the start of self, spanning no bytes.
Returns a span pointing to the start of self spanning no bytes .
self