docs: public IndexDescriptorDef getIndexDescriptor(String name)
      {
          IndexDescriptorDef indexDef = null;
  
          for (Iterator it = _indexDescriptors.iterator(); it.hasNext(); )
          {
              indexDef = (IndexDescriptorDef)it.next();
              if (indexDef.getName().equals(name))
              {
                  return indexDef;
              }
          }
          return null;
      }