src/main/java/org/efaps/ui/wicket/util/ParameterUtil.java
public static Map<String, String[]> parameter2Map(final IRequestParameters _parameters)
    {
        final Map<String, String[]> ret = new HashMap<>();
        for (final String name : _parameters.getParameterNames()) {
            ret.put(name, ParameterUtil.parameter2Array(_parameters, name));
        }
        return ret;
    }
public static Map<String, String[]> parameter2Map(final IRequestParameters _parameters)
    {
        final Map<String, String[]> ret = new HashMap<>();
        for (final String name : _parameters.getParameterNames()) {
            ret.put(name, ParameterUtil.parameter2Array(_parameters, name));
        }
        return ret;
    }
Get an array for the StringValues.

@param _parameters IRequestParameters
@return always StringArray, if parameter does not exist an empty
StringArray