How to get MOXy to trim the text values?

Hi,

I mapped a field in my Java class to an XPath like "ns1:CountryCode/text()".

I find that when the XML looks like this:
                            <CountryCode listID='' listAgencyID='' listAgencyName='' listName='' listVersionID='' name='' languageID='' listURI='http://www.foo.com' listSchemeURI='http://www.foo.com'>
                            USA
                            </CountryCode>

The value that gets unmarshalled is "                            USA".  All those spaces that were used for formatting are preserved.  Is there a way to configure EclipseLink to trim the spaces on either end of the string and just give me "USA"?

Thanks!
--Polly