presto-spi/src/main/java/io/prestosql/spi/connector/ConnectorTableMetadata.java/ConnectorTableMetadata/toString
class ConnectorTableMetadata:    @Override
    public String toString()
    {
        StringBuilder sb = new StringBuilder("ConnectorTableMetadata{");
        sb.append("table=").append(table);
        sb.append(", columns=").append(columns);
        sb.append(", properties=").append(properties);
        comment.ifPresent(value -> sb.append(", comment='").append(value).append("'"));
        sb.append('}');
        return sb.toString();
    }