class OneofDescriptor

class OneofDescriptor {
    use GetPublicDescriptorTrait;
    
    /** @var  \Google\Protobuf\Internal\OneofDescriptor $internal_desc */
    private $internal_desc;
    
    /**
     * @internal
     */
    public function __construct($internal_desc) {
        $this->internal_desc = $internal_desc;
    }
    
    /**
     * @return string The name of the oneof
     */
    public function getName() {
        return $this->internal_desc
            ->getName();
    }
    
    /**
     * @param int $index Must be >= 0 and < getFieldCount()
     * @return FieldDescriptor
     */
    public function getField($index) {
        if (is_null($this->internal_desc
            ->getFields()) || !isset($this->internal_desc
            ->getFields()[$index])) {
            return null;
        }
        return $this->getPublicDescriptor($this->internal_desc
            ->getFields()[$index]);
    }
    
    /**
     * @return int Number of fields in the oneof
     */
    public function getFieldCount() {
        return count($this->internal_desc
            ->getFields());
    }
    public function isSynthetic() {
        return $this->internal_desc
            ->isSynthetic();
    }

}