segment = AbstractURLSegment.newSegment(segmentMultiParam);
multiParamSegment = (MultiParamSegment)segment;
metaPattern = multiParamSegment.getMetaPatternWithGroups();
String fileName = "filename-gsaon-1.2.3.zip";
Matcher matcher = metaPattern.matcher(fileName);
assertTrue(matcher.matches());
// testing segment parsing with regular expressions
assertEquals("gsaon", matcher.group(1));