Potential regression of the parser with anonymous classes (qdox 1.6.1)

The problem looks like the parser doesn't like dealing with multiple anonymous classes from the same interface.

The release 2.2 of the maven-plugin-plugin transitively depends on qdox 1.6.1 which isn't capable anymore of parsing a class that qdox 1.5 used to be able to parse.

Look at the Mojo webstart-maven-plugin. In JnlpMojo I have 2 inner classes implementing the java.io.FileFilter class.

private FileFilter modifiedFileFilter = new FileFilter()
{
};

private FileFilter jarFileFilter = new FileFilter()
{
}

The parser fails in the second:

com.thoughtworks.qdox.parser.ParseException: syntax error @[336,55] in file:/home/jerome/Projects/OSS/m2/mojo-https/trunk/mojo/webstart-maven-plugin/plugin/src/main/java/org/codehaus/mojo/webstart/JnlpMojo.java
at com.thoughtworks.qdox.parser.impl.Parser.yyerror(Parser.java:638)
at com.thoughtworks.qdox.parser.impl.Parser.yyparse(Parser.java:747)
at com.thoughtworks.qdox.parser.impl.Parser.parse(Parser.java:619)
at com.thoughtworks.qdox.JavaDocBuilder.addSource(JavaDocBuilder.java:300)
at com.thoughtworks.qdox.JavaDocBuilder.addSource(JavaDocBuilder.java:316)
at com.thoughtworks.qdox.JavaDocBuilder.addSource(JavaDocBuilder.java:312)
at com.thoughtworks.qdox.JavaDocBuilder$1.visitFile(JavaDocBuilder.java:369)
at com.thoughtworks.qdox.directorywalker.DirectoryScanner.walk(DirectoryScanner.java:43)
at com.thoughtworks.qdox.directorywalker.DirectoryScanner.walk(DirectoryScanner.java:34)
at com.thoughtworks.qdox.directorywalker.DirectoryScanner.walk(DirectoryScanner.java:34)

If I remplace the first anonymous class with an inner class, the problem disappears.

PS: please release qdox 1.6 and 1.6.1 in Jira so that this issue can be edited to the appropriate "affects Version/s" ids.