@Override
  public Future<Void> modifyColumnFamilyStoreFileTrackerAsync(TableName tableName, byte[] family,
    String dstSFT) throws IOException {
    return admin.modifyColumnFamilyStoreFileTracker(tableName, family, dstSFT);
  }
The {@link Admin} implementation which is based on an {@link AsyncAdmin}.
hbase-client/src/main/java/org/apache/hadoop/hbase/client/AdminOverAsyncAdmin.java