presto-base-jdbc/src/main/java/io/prestosql/plugin/jdbc/BaseJdbcClient.java/BaseJdbcClient/quoted
class BaseJdbcClient:    protected String quoted(String catalog, String schema, String table)
    {
        StringBuilder sb = new StringBuilder();
        if (!isNullOrEmpty(catalog)) {
            sb.append(quoted(catalog)).append(".");
        }
        if (!isNullOrEmpty(schema)) {
            sb.append(quoted(schema)).append(".");
        }
        sb.append(quoted(table));
        return sb.toString();
    }