presto-accumulo/src/main/java/io/prestosql/plugin/accumulo/metadata/ZooKeeperMetadataManager.java/ZooKeeperMetadataManager/getSchemaNames
class ZooKeeperMetadataManager:    public Set<String> getSchemaNames()
    {
        try {
            Set<String> schemas = new HashSet<>();
            schemas.addAll(curator.getChildren().forPath("/"));
            return schemas;
        }
        catch (Exception e) {
            throw new PrestoException(ZOOKEEPER_ERROR, "Error fetching schemas", e);
        }
    }