entity/traits/Properties.php
public function getOriginal($property = null, $default = null)
    {
        if (is_null($property)) return $this->original;

        return isset($this->original[$property]) ? $this->original[$property] : $default;
    }
public function getOriginal($property = null, $default = null)
    {
        if (is_null($property)) return $this->original;

        return isset($this->original[$property]) ? $this->original[$property] : $default;
    }
Get the entity original attribute values.

@param  string|null $property
@param  mixed $default
@return mixed|array