{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"//"}]}
    // converting `(_1: Pin<&mut CorLayout>, _2: &mut Context<'_>) -> Poll<()>`
    let source_info = SourceInfo::outermost(span);
    // into `(_1: Pin<&mut ProxyLayout>, _2: &mut Context<'_>) -> Poll<()>`