default CompletableFuture<List<TableName>> listTableNames() {
    return listTableNames(false);
  }
List all of the names of userspace tables.
@return a list of table names wrapped by a {@link CompletableFuture}.
@see #listTableNames(Pattern, boolean)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/AsyncAdmin.java