Parsing error on creating WPS factory at DecribeProcessRequest

my first mail to geotools-developer
public static WPSFactory getWpsFactory(URL wpsUrl, String
processName)throws ServiceException, IOException {
WebProcessingService wps = new WebProcessingService(wpsUrl);
DescribeProcessRequest descRequest = wps.createDescribeProcessRequest();
descRequest.setIdentifier(processName);
DescribeProcessResponse descResponse = wps.issueRequest(descRequest);
ProcessDescriptionsType processDesc = descResponse.getProcessDesc();
ProcessDescriptionType pdt = (ProcessDescriptionType)
processDesc.getProcessDescription().get(0);
return new WPSFactory(pdt, wpsUrl);
}

The code is copied from http://docs.codehaus.org/display/GEOTDOC/WPS+Plugin

Calling this method with a valid url (pointing to a local wps) an a
processName results in row "DescribeProcessResponse descResponse =
wps.issueRequest(descRequest);" in this exception:

!MESSAGE FooBar: Parsing failed for LiteralData:
java.lang.RuntimeException: Unable to set property: AllowedValues for
eobject:

LiteralInputType
!STACK 0
java.lang.RuntimeException: Parsing failed for LiteralData:
java.lang.RuntimeException: Unable to set property: AllowedValues for
eobject:

LiteralInputType
at org.geotools.xml.impl.ParseExecutor.visit(ParseExecutor.java:158)
at
org.geotools.xml.impl.BindingWalker$BindingExecutionChain.execute(BindingWalker.java:216)
at org.geotools.xml.impl.BindingWalker.walk(BindingWalker.java:182)
at
org.geotools.xml.impl.ElementHandlerImpl.endElement(ElementHandlerImpl.java:222)
at org.geotools.xml.impl.ParserHandler.endElement(ParserHandler.java:605)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at
org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown
Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.geotools.xml.Parser.parse(Parser.java:221)
at org.geotools.xml.Parser.parse(Parser.java:149)
at
org.geotools.data.wps.response.DescribeProcessResponse.<init>(DescribeProcessResponse.java:65)
at
org.geotools.data.wps.WPS1_0_0$InternalDescribeProcessRequest.createResponse(WPS1_0_0.java:133)
at
org.geotools.data.ows.AbstractWPS.internalIssueRequest(AbstractWPS.java:417)
at
org.geotools.data.wps.WebProcessingService.issueRequest(WebProcessingService.java:233)
at
..... 20 more in my code .....

Caused by: java.lang.RuntimeException: Unable to set property:
AllowedValues for eobject:

LiteralInputType
at
org.geotools.xml.AbstractComplexEMFBinding.setProperty(AbstractComplexEMFBinding.java:284)
at
org.geotools.xml.AbstractComplexEMFBinding.setProperties(AbstractComplexEMFBinding.java:202)
at
org.geotools.xml.AbstractComplexEMFBinding.parse(AbstractComplexEMFBinding.java:143)
at org.geotools.xml.impl.ParseExecutor.visit(ParseExecutor.java:149)
... 50 more
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast
to net.opengis.ows11.AllowedValuesType
at
net.opengis.wps10.impl.LiteralInputTypeImpl.eSet(LiteralInputTypeImpl.java:303)
at
org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSet(BasicEObjectImpl.java:1073)
at org.geotools.xml.EMFUtils.set(EMFUtils.java:59)
at
org.geotools.xml.AbstractComplexEMFBinding.setProperty(AbstractComplexEMFBinding.java:232)
... 53 more

Since the method works fine for other processes offered by the same WPS
something inside this special process description must be wrong (or wrong in
the parsing code).

I'll attach the describeProcessResponse to this bug report.