API - participant return values don't worked - dropped in BAO

Test that demonstrates return values don't work. Participant, Contribute, Member , Pledge all leverage the same BAO query BUT CRM_Contact_BAO_Query drops participant, pledge & case return values, not sure why

foreach ($this->_fields as $name => $field) {

//skip component fields
if ( ( substr( $name, 0, 12 ) == 'participant_' ) ||
( substr( $name, 0, 7 ) == 'pledge_' ) ||
( substr( $name, 0, 5 ) == 'case_' ) )

{ continue; }

/*

• Check Participant Get respects return properties
  */
  function testGetWithReturnProperties() { $params = array( 'contact_id' => $this->_contactID, 'version' => $this->_apiversion, 'return.status_id' => 1, 'return.participant_status_id' => 1, ); $result = & civicrm_api3_participant_get($params); $this->assertArrayHasKey('participant_status_id', $result['values'][$result['id']]); }