app/Subscriptions/Plan.php
/**
     * Specify that the plan has a monthly interval.
     *
     * @return $this
     */
Specify that the plan has a monthly interval.
@return $this
Specify that the plan has a monthly interval . @return $this
public function monthly()
    {
        $this->interval = 'monthly';
        return $this;
    }
public function monthly ( ) { $ this -> interval = 'monthly' ; return $ this ; }
Specify that the plan has a monthly interval.
Specify that the plan has a monthly interval .