code: @NonNull
      public ReplicatorConfiguration setDocumentIDs(List<String> documentIDs) {
          if (readonly) { throw new IllegalStateException("ReplicatorConfiguration is readonly mode."); }
          this.documentIDs = documentIDs;
          return getReplicatorConfiguration();
      }
docs: Sets a set of document IDs to filter by: if given, only documents
  with these IDs will be pushed and/or pulled.
  
  @param documentIDs The document IDs.
  @return The self object.