_propDict)) { if (is_a($this->_propDict["mentionees"], "\Microsoft\Graph\Model\IdentitySet") || is_null($this->_propDict["mentionees"])) { return $this->_propDict["mentionees"]; } else { $this->_propDict["mentionees"] = new IdentitySet($this->_propDict["mentionees"]); return $this->_propDict["mentionees"]; } } return null; } /** * Sets the mentionees * The identities of the users mentioned in this action. * * @param IdentitySet $val The value to assign to the mentionees * * @return MentionAction The MentionAction */ public function setMentionees($val) { $this->_propDict["mentionees"] = $val; return $this; } }