Function snippet_block_with_applicability

pub fn snippet_block_with_applicability<'a>(
    sess: &impl HasSession,
    span: Span,
    default: &'a str,
    indent_relative_to: Option<Span>,
    applicability: &mut Applicability,
) -> Cow<'a, str>

Same as snippet_block, but adapts the applicability level by the rules of snippet_with_applicability.