{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"AttrInput::TokenTree(tt)"}]}
            AttrInput::TokenTree(tt) => match tt.token_trees().flat_tokens() {
        match self.input.as_deref()? {
                [tt::TokenTree::Leaf(tt::Leaf::Ident(ident))] => Some(ident),