config-prettyfaces/src/main/java/com/ocpsoft/pretty/faces/url/QueryString.java
public static QueryString build(final Map<String, String[]> params)
   {
      QueryString queryString = new QueryString();
      queryString.addParameters(params);
      return queryString;
   }
public static QueryString build(final Map<String, String[]> params)
   {
      QueryString queryString = new QueryString();
      queryString.addParameters(params);
      return queryString;
   }
Build a query string from the given map of name=value pairs. For parameters with more than one value, each value
will be appended using the same name.