{"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"ast::Fn::cast(item).and_then(|fn_def|"}]}
    ast::Fn::cast(item).and_then(|fn_def| {
fn method_range(item: SyntaxNode) -> Option<(TextRange, Option<TextRange>)> {
        if test_related_attribute_syn(&fn_def).is_some() {