{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"FormatArgsPiece::Placeholder(FormatPlaceholder"}]}
        FormatArgsPiece::Placeholder(FormatPlaceholder {
    if template.iter().all(|piece| match piece {
            argument: FormatArgPosition { kind: FormatArgPositionKind::Number, .. },