def rewritten_code
      @node.loc.expression.source_buffer.source[begin_pos...end_pos].sub(Engine::ERUBY_STMT_SPLITTER, "@output_buffer.append= ")
        .sub(Engine::ERUBY_STMT_SPLITTER, Engine::ERUBY_EXPR_SPLITTER)
    end
def rewritten_code
      @node.loc.expression.source_buffer.source[begin_pos...end_pos].sub(Engine::ERUBY_STMT_SPLITTER, "@output_buffer.append= ")
        .sub(Engine::ERUBY_STMT_SPLITTER, Engine::ERUBY_EXPR_SPLITTER)
    end
The rewritten erb expr code.

 @return [String] rewritten code.