private CompletableFuture<Void> createNamespace(final String namespace) {
    final NamespaceDescriptor descriptor = NamespaceDescriptor.create(namespace).build();
    return admin.createNamespace(descriptor);
  }
Cluster-backed correctness tests for the functionality provided by {@link MetaBrowser}.
hbase-server/src/test/java/org/apache/hadoop/hbase/master/http/TestMetaBrowser.java