default behaviour of cxf on base64 encoded message

Hi,

I am trying to understand the behaviour of cxf for element
<xs:element name="Payload"
ns1:expectedContentTypes="application/octet-stream" type="xs:base64Binary"
xmlns:ns1="http://www.w3.org/2005/05/xmlmime"/>

Payload element is unmarshalled to a DataHandlerObject .

looks like cxf is decoding the base64 encoded message is this the default
behaviour?

Thanks
Ravi