Unity.cs

using MongoDB.Bson;
using Realms;
using Realms.Sync;
using System.IO;
using System.Threading.Tasks;

public class Cube
{
    private async void ReadCopy()
    {
        // :snippet-start: read_a_realm_unity
        // After copying the above created file to the project folder,
        // we can access it in Application.dataPath

        // If you are using a local realm
        var config = RealmConfiguration.DefaultConfiguration;

        // If the realm is synced realm
        var app = App.Create("myRealmAppId");
        var user = await app.LogInAsync(Credentials.Anonymous());
        config = new PartitionSyncConfiguration("myPartition", user);

        if (!File.Exists(config.DatabasePath))
        {//:uncomment-start:
            //FileUtil.CopyFileOrDirectory(Path.Combine(Application.dataPath,
            //     "bundled.realm"), config.DatabasePath);
            //:uncomment-end:
        }

        var realm = Realm.GetInstance(config);
        // :snippet-end:
    }
}