presto-main/src/main/java/io/prestosql/execution/DataDefinitionTask.java/DataDefinitionTask/explain
class DataDefinitionTask:    default String explain(T statement, List<Expression> parameters)
    {
        StringBuilder builder = new StringBuilder();

        builder.append(SqlFormatter.formatSql(statement));

        if (!parameters.isEmpty()) {
            builder.append("\n")
                    .append("Parameters: ")
                    .append(parameters);
        }

        return builder.toString();
    }