code: @Required
      public void setUrlRestrictions(Map<String, String> restrictions) {
          urlRestrictions = new LinkedHashMap<>();
  
          ExpressionParser parser = new SpelExpressionParser();
  
          for (Map.Entry<String, String> entry : restrictions.entrySet()) {
              urlRestrictions.put(entry.getKey(), parser.parseExpression(entry.getValue()));
          }
      }
docs: Sets the map of restrictions. Each key of the map is ANT-style path pattern, used to match the URLs of incoming
  requests, and each value is a Spring EL expression.