$_propDict
$_propDict : \Microsoft\Graph\Model\array(string
The array of properties available to the model
ItemBody class
getContentType() : \Microsoft\Graph\Model\BodyType
Gets the contentType
The contentType
setContentType(\Microsoft\Graph\Model\BodyType  $val) : null
                Sets the contentType
| \Microsoft\Graph\Model\BodyType | $val | The value to assign to the contentType |