Consider a complex type

<complexType name="ArrayOfSwaRef">
<sequence>
<element maxOccurs="unbounded" minOccurs="0" name="swaRef" nillable="true" type="wsi:swaRef"/>
</sequence>
</complexType>

Using wsconsume the type is mapped to the class:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "ArrayOfSwaRef", propOrder = {
"swaRef"
})
public class ArrayOfSwaRef {

@XmlAttachmentRef
protected List<DataHandler> swaRef;
....
}

Although if such a construct is allowed is debatable as API http://java.sun.com/javase/6/docs/api/javax/xml/bind/annotation/XmlAttachmentRef.html says that the filed/property must always map to a DataHandler class, jbossws-native misses to scan such parameter types properly and eventually the Content-Type is never set to multipart/related on the wire.