Inconsistency in return from ("GroupContact", "create")

Per discussion on civicrm-api mailing list:

I noticed that a successful ("EntityTag","create") returns:
array( 'is_error' => 0,
'not_added' => 0,
'added' => 1,
'total_count' => 1,
);

While a successful ("GroupContact", "create") returns:
array( 'is_error' => 0,
'values' => array(
'not_added' => 0,
'added' => 1,
'total_count' => 1,
),
);

Notice the extra "values" array, and that it does not contain the entity created like in all other calls to the API. This should be adjusted to match the return from ("EntityTag", "create").