Added a comment to make it clearer that the operation has to be the first

    public Uri pushIntoContentResolver(ContentResolver resolver) {

        ArrayList<ContentProviderOperation> operationList =

            new ArrayList<ContentProviderOperation>();

        // After applying the batch the first result's Uri is returned so it is important that

        // the RawContact is the first operation that gets inserted into the list

        ContentProviderOperation.Builder builder =

            ContentProviderOperation.newInsert(RawContacts.CONTENT_URI);

        String myGroupsId = null;