The generated XML file for the MIME-resolver is not always consistent with the
options one enters in the GUI dialog. If one would like to create a file type
for an XML file with the root element <root> and the file extension "abc" the
XXResolver.xml file generated has:
1. The file name extension set to "xml" (instead of "abc")
2. The xml-rule tag has: <element ns="root"/> instead of <element root="root"/>
The user must hand-edit the resolver file to get it's file type recognized. This
is an example what is generated for a new "file type" with the extension "bar"
and the root element "java":
<MIME-resolver>
    <file>
        <ext name="xml"/>
        <resolver mime="text/x-bean-archive+xml">
            <xml-rule>
                <element ns="java"/>
            </xml-rule>
        </resolver>

    </file>
</MIME-resolver>