_propDict)) { return $this->_propDict["sequenceNumber"]; } else { return null; } } /** * Sets the sequenceNumber * The sequence number for the roster update that is used to identify the notification order. * * @param int $val The sequenceNumber * * @return DeltaParticipants */ public function setSequenceNumber($val) { $this->_propDict["sequenceNumber"] = intval($val); return $this; } /** * Gets the participants * * @return array|null The participants */ public function getParticipants() { if (array_key_exists("participants", $this->_propDict)) { return $this->_propDict["participants"]; } else { return null; } } /** * Sets the participants * * @param Participant[] $val The participants * * @return DeltaParticipants */ public function setParticipants($val) { $this->_propDict["participants"] = $val; return $this; } }