code: public Element findByKey(Object key)
      {
          Element element = null;
  
          // Note : Unlike BucketImpl (EJB Cache), the WrapperBucket (Wrapper Cache)
          // does NOT support duplicate entries. Therefore, the order of the search
          // is not important and a Map may be used instead of an Array.     d535968
  
          if (ivWrappers != null)
          {
              element = ivWrappers.get(key);
          }
  
          return element;
      }
docs: Search the specified bucket for the specified key; return
  the Element holding the target object, or null if there
  is no object with the key in the bucket.
  
  @param key key of the object element to be returned.
  @return the Element holding the target object identified by the key.