code: public String fullyQualifiedPathForLedger(EditLogLedgerMetadata e) {
      String nameForLedger = nameForLedger(e);
      return fullyQualifiedPathForLedger(nameForLedger);
    }
docs: Return the full ZNode path for a ZNode corresponding to a specific
  to a specific ledger's metadata.
  @param e Metadata object that we want to get the full path for
  @return Full path to the ledger's child ZNode