}
if(contentOnly){
XMLStreamWriter fw;
if(data instanceof SignedMessagePart && writer instanceof StAXEXC14nCanonicalizerImpl){
SignedMessagePart body = (SignedMessagePart)data;
List attributeValuePrefixes = body.getAttributeValuePrefixes();
if(attributeValuePrefixes != null && !attributeValuePrefixes.isEmpty()){
List prefixList = ((StAXEXC14nCanonicalizerImpl)writer).getInclusivePrefixList();
if(prefixList == null){
prefixList = new ArrayList();
}