private void MergeExternalPendingIndexable (Indexable indexable)
		{
			Indexable other = (Indexable) external_pending_indexables [indexable.DisplayUri];

			if (other == null)
				return;

			external_pending_indexables.Remove (indexable.DisplayUri);

			Log.Debug ("Merging in properties of external indexable for {0} into {1}",
				   indexable.DisplayUri, indexable.Uri);

			indexable.Merge (other);
		}