Operation return type lists not generated

I have a problem with Lists while generating code from WSDL

When you look at the code below the return type of the method is Datastream. I aspect a List of Datastream objects. Is this a bug?

wsdl:
<element name="getDatastreams">
<complexType>
<sequence>
<element name="pid" type="xsd:string"/>
<element name="asOfDateTime" type="xsd:string"/>
<element name="dsState" type="xsd:string"/>
</sequence>
</complexType>
</element>
<element name="getDatastreamsResponse">
<complexType>
<sequence>
<element name="datastream" minOccurs="0" maxOccurs="unbounded" type="fedora-types:Datastream"/>
</sequence>
</complexType>
</element>

in 1.2.5:
@WebMethod(operationName = "getDatastreams", action = "http://www.fedora.info/definitions/1/0/api/#getDatastreams")
@WebResult(name = "datastream", targetNamespace = "")
public Datastream getDatastreams(
@WebParam(name = "pid", targetNamespace = "")
String pid,
@WebParam(name = "asOfDateTime", targetNamespace = "")
String asOfDateTime,
@WebParam(name = "dsState", targetNamespace = "")
String dsState);