Jackalope\ObjectManager::removeItem PHP Method

    public function removeItem($absPath, PropertyInterface $property = null)
    {
        if (!$this->transport instanceof WritingInterface) {
            throw new UnsupportedRepositoryOperationException('Transport does not support writing');
        }
        // the object is always cached as invocation flow goes through Item::remove() without exception
        if (!isset($this->objectsByPath['Node'][$absPath])) {
            throw new RepositoryException("Internal error: Item not found in local cache at {$absPath}");
        }
        if ($property) {
            $absPath = PathHelper::absolutizePath($property->getName(), $absPath);
            $this->performPropertyRemove($absPath, $property);
        } else {
            $node = $this->objectsByPath['Node'][$absPath];
            $this->performNodeRemove($absPath, $node);
            $this->cascadeDelete($absPath);
        }
    }