CrEOF\Spatial\PHP\Types\AbstractGeometry::validateRingValue PHP Method

    protected function validateRingValue($ring)
    {
        switch (true) {
            case $ring instanceof AbstractLineString:
                $ring = $ring->toArray();
                break;
            case is_array($ring):
                break;
            default:
                throw new InvalidValueException(sprintf('Invalid %s LineString value of type "%s"', $this->getType(), is_object($ring) ? get_class($ring) : gettype($ring)));
        }
        $ring = $this->validateLineStringValue($ring);
        if ($ring[0] !== end($ring)) {
            throw new InvalidValueException(sprintf('Invalid polygon, ring "(%s)" is not closed', $this->toStringLineString($ring)));
        }
        return $ring;
    }