Model/DateTimeRange.php
public function jsonSerialize()
    {
        $json = [];

        if (null !== $this->min) {
            $json['min'] = $this->min->format(\DateTime::ISO8601);
        }
        if (null !== $this->max) {
            $json['max'] = $this->max->format(\DateTime::ISO8601);
        }

        return $json;
    }
public function jsonSerialize()
    {
        $json = [];

        if (null !== $this->min) {
            $json['min'] = $this->min->format(\DateTime::ISO8601);
        }
        if (null !== $this->max) {
            $json['max'] = $this->max->format(\DateTime::ISO8601);
        }

        return $json;
    }
Gets all data that should be available in a json representation.

@return array an associative array of the available variables