code: public I_CmsSearchIndex getIndex(String indexName) {
  
          for (I_CmsSearchIndex index : m_indexes) {
              if (indexName.equalsIgnoreCase(index.getName())) {
                  return index;
              }
          }
          return null;
      }
docs: Returns the Lucene search index configured with the given name.<p>
  The index must exist, otherwise <code>null</code> is returned.
  
  @param indexName then name of the requested search index
  
  @return the Lucene search index configured with the given name