public async Task RegisterReferencer(AbsoluteId referencerId)
{
gameDispatcher.EnsureAccess();
using (await loader.LockDatabaseAsynchronously())
{
if (references.ContainsKey(referencerId))
{
throw new InvalidOperationException("The given referencer is already registered.");
}
references.Add(referencerId, new Dictionary <AssetId, List <ReferenceAccessor> >());
}
}
