protected Map<String, List<String>> decodeParameters(
            Map<String, String> parms) {
        return this.decodeParameters(parms.get(QUERY_STRING_PARAMETER));
    }
protected Map < String , List < String > > decodeParameters ( Map < String , String > parms ) { return this . decodeParameters ( parms . get ( QUERY_STRING_PARAMETER ) ) ; }
Decode parameters from a URL, handing the case where a single parameter
name might have been supplied several times, by return lists of values.
In general these lists will contain a single element.

@param parms
original <b>NanoHttpd</b> parameters values, as passed to the
<code>serve()</code> method.
@return a map of <code>String</code> (parameter name) to
<code>List&lt;String&gt;</code> (a list of the values supplied).