config-prettyfaces/src/main/java/com/ocpsoft/pretty/faces/config/mapping/UrlMapping.java
public URLPatternParser getPatternParser()
   {
      if ((parser == null) && (pattern != null))
      {
         this.parser = new URLPatternParser(pattern);
      }
      return parser;
   }
public URLPatternParser getPatternParser()
   {
      if ((parser == null) && (pattern != null))
      {
         this.parser = new URLPatternParser(pattern);
      }
      return parser;
   }
Get this patterns pattern parser instance.