code: public Object getProperty(PropertyKey key)
      {
          //
          // Delegate up to any parent map
          //
          if (_delegateMap != null)
              return _delegateMap.getProperty(key);
  
          //
          // If neither found a value, return the default value
          //
          return key.getDefaultValue();
      }
docs: Returns the property value specified by 'key' within this map.