{"ast_node_type":"variable","tokens":[{"end":56,"kind":"keyword","start":0,"text":"let"}]}
    let name: ast::NameRef = ctx.find_node_at_offset()?;
pub(crate) fn qualify_method_call(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> {
    let call = name.syntax().parent().and_then(ast::MethodCallExpr::cast)?;