docs: public final void onEachIndexInWorkspace( String workspaceName,
                                                ManagedIndexOperation op ) {
          assert workspaceName != null;
          Collection<AtomicIndex> indexes = providedIndexesFor(workspaceName);
          if (indexes != null) {
              for (AtomicIndex atomicIndex : indexes) {
                  assert atomicIndex.managed() != null;
                  assert atomicIndex.indexDefinition() != null;
                  op.apply(workspaceName, atomicIndex.managed(), atomicIndex.indexDefinition());
              }
          }
      }