wadl2java generates invalid method names

I have a particular wadl that has a method that has multiple representations
(different versions of the same object). Using the -supportMultipleXmlReps,
produces method names that have invalid characters in the name. The
representations in the wadl are something like this:

application.vnd.myvnd.some-object+xml
application.vnd.myvnd.some-object-v2+xml

The resulting method names are generated with "some-object" and
"some-object-v2" as part of the method name.

Tested this on wadl2java v2.5.2 and 2.7.8.

Similar to issue https://issues.apache.org/jira/browse/CXF-4932
<https://issues.apache.org/jira/browse/CXF-4932> but has to do with method
names, not parameters.