^^&&^^

Edit File: ModelFactory.php

<?php
namespace Kunnu\Dropbox\Models;

class ModelFactory
{

/**
     * Make a Model Factory
     *
     * @param  array  $data Model Data
     *
     * @return \Kunnu\Dropbox\Models\ModelInterface
     */
    public static function make(array $data = array())
    {
        if (isset($data['.tag']) && isset($data['id'])) {
            $tag = $data['.tag'];

//File
            if ($tag === 'file') {
                return new FileMetadata($data);
            }

//Folder
            if ($tag === 'folder') {
                return new FolderMetadata($data);
            }
        }

//Temporary Link
        if (isset($data['metadata']) && isset($data['link'])) {
            return new TemporaryLink($data);
        }

//List
        if (isset($data['entries'])) {
            return new MetadataCollection($data);
        }

//Search Results
        if (isset($data['matches'])) {
            return new SearchResults($data);
        }

//Deleted File/Folder
        if (!isset($data['.tag']) || !isset($data['id'])) {
            return new DeletedMetadata($data);
        }

//Base Model
        return new BaseModel($data);
    }
}