Pinq\Analysis\TypeId::isComposite PHP Method

    public static function isComposite($id)
    {
        return strpos($id, 'composite<') === 0 && $id[strlen($id) - 1] === '>';
    }

 public function getType($typeIdentifier)
 {
     if (TypeId::isObject($typeIdentifier)) {
         return $this->getObjectType(TypeId::getClassTypeFromId($typeIdentifier));
     } elseif (TypeId::isComposite($typeIdentifier)) {
         return $this->getCompositeType(array_map([$this, __FUNCTION__], TypeId::getComposedTypeIdsFromId($typeIdentifier)));
     } else {
         return $this->getNativeType($typeIdentifier);
     }
 }