fn secondary_spans<'this>(
        &'this self,
    ) -> Option<Box<dyn Iterator<Item = Span> + Send + Sync + 'this>> {
        None
    }
/// Yields an iterator over secondary spans related to the diagnostic, if
/// any.
Yields an iterator over secondary spans related to the diagnostic, if
any.
Yields an iterator over secondary spans related to the diagnostic if any .
fn secondary_spans<'this>(
        &'this self,
    ) -> Option<Box<dyn Iterator<Item = Span> + Send + Sync + 'this>> {
        None
    }
fn secondary_spans < ' this > ( & ' this self , ) -> Option < Box < dyn Iterator < Item = Span > + Send + Sync + ' this > > { None }
Yields an iterator over secondary spans related to the diagnostic, if
any.
Yields an iterator over secondary spans related to the diagnostic if any .
&'this self
&'this self