/** * Returns the day of the year for a date as a number between 1 and 366. * * The argument can be any expression as long as it resolves to a date. * * @see http://docs.mongodb.org/manual/reference/operator/aggregation/dayOfYear/ * @see Expr::dayOfYear * @param mixed|Expr $expression * @return self */ public function dayOfYear($expression) { $this->expr->dayOfYear($expression); return $this; }