s API request: 
#&gt; + not_a_real_parameter 
#&gt; Allowed variables are: 
#&gt; + milestone,state,assignee,creator,mentioned,labels,sort,direction,since 
#&gt; Please remove unallowed fields and try again. 
#&gt; Use the browse_docs() function or visit https://developer.github.com/v3/ for full API documentation.</pre></body></html></div>
<p>As the <code><a href="../reference/get_issues.html">get_issues()</a></code> error message says, detailed
documentation can also be viewed using the <code><a href="../r