public static <T extends Comparable> DateTimeExpression<T> currentTimestamp(Class<T> cl) {
        return Expressions.dateTimeOperation(cl, Ops.DateTimeOps.CURRENT_TIMESTAMP);
    }
Create an expression representing the current time instant as a DateTimeExpression instance

@return current timestamp
querydsl-core/src/main/java/com/querydsl/core/types/dsl/DateTimeExpression.java