src/DateRange.php
public function isOpenStarted()
    {
        return is_null($this->after) ||  (!is_null($this->before) && $this->before->lte($this->after));
    }
public function isOpenStarted()
    {
        return is_null($this->after) ||  (!is_null($this->before) && $this->before->lte($this->after));
    }
public function isOpenStarted ( ) { return is_null ( $ this -> after ) || ( ! is_null ( $ this -> before ) && $ this -> before -> lte ( $ this -> after ) ) ; }
Determines if a date range has a lower bound.

@return bool
Determines if a date range has a lower bound .