{"ast_node_type":"variable","tokens":[{"end":97,"kind":"keyword","start":0,"text":"let"}]}
    let trimmed_file_range = trimmed_text_range(&source_file, source_file.syntax().text_range());
    let trimmed_selected_range = trimmed_text_range(&source_file, ctx.selection_trimmed());
    if module.is_mod_rs(ctx.db()) {