restartSession

Access the RStudio API (if available) and provide informative error
messages when it's not.

Kevin Ushey

<dl><dt>command</dt>
<dd>A command (as a string) to be run after restarting.</dd></dl>

<dl>

<dt>command</dt>
<dd>A command (as a string) to be run after restarting.</dd>

</dl>