{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"///"}]}
    /// Constructs a `SubdiagnosticVariant` from a field or type attribute such as `#[note]`,
impl SubdiagnosticVariant {
    /// `#[error(parser::add_paren, no_span)]` or `#[suggestion(code = "...")]`. Returns the