in genesis-enforcer-rules/src/main/java/org/apache/geronimo/genesis/enforcer/ValidateConfiguration.java [52:57]
private void check(EnforcerRuleHelper helper, String path, String xmlPath, String prefix) throws ExpressionEvaluationException, EnforcerRuleException {
String actual = (String) helper.evaluate( "${" + path + "}" );
if (actual == null || actual.startsWith(prefix)) {
throw new EnforcerRuleException(xmlPath + " must be supplied");
}
}