return value as an R object,
a wrapper for julia object or no return.
The value of need_return could be TRUE (equal to option "R") or FALSE (equal to option "None"),
or one of the options "R", "Julia" and "None".</p></td>
    </tr>
    <tr>
      <th>show_value</th>
      <td><p>whether to invoke the julia display system or not.</p></td>
    </tr>
    <tr>
      <th>...</th>
      <td><p>the arguments you want to pass to the julia function.</p></td>
    </tr>
    </table>
    
    <h2 class="hasAnchor" id="