{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"file_id.original_file(sema.db).file_id(sema.db),"}]}
        file_id.original_file(sema.db).file_id(sema.db),
    source_change.insert_source_edit(
        TextEdit::replace(param_source.syntax().text_range(), String::from(self_param)),