docs: public final ManagedIndex getManagedIndex( String indexName,
                                                 String workspaceName ) {
          logger().trace("Looking for managed index '{0}' in '{1}' provider in workspace '{2}'", indexName, getName(),
                         workspaceName);
          Map<String, AtomicIndex> byWorkspaceNames = providedIndexesByWorkspaceNameByIndexName.get(indexName);
          if (byWorkspaceNames == null) {
              return null;
          }
          AtomicIndex atomicIndex = byWorkspaceNames.get(workspaceName);
          return atomicIndex == null ? null : atomicIndex.managed();
      }