// Manual implementation of `SessionDiagnostic` to be able to call `span_to_snippet`.
impl<'a> SessionDiagnostic<'a> for MissingTypeParams {
fn into_diagnostic(self, sess: &'a ParseSess) -> DiagnosticBuilder<'a, ErrorGuaranteed> {
// Manual implementation of `SessionDiagnostic` to be able to call `span_to_snippet`.
impl<'a> SessionDiagnostic<'a> for MissingTypeParams {
fn into_diagnostic(self, sess: &'a ParseSess) -> DiagnosticBuilder<'a, ErrorGuaranteed> {