* One matching Default element, One matching Override element, Both a
* matching Default element and a matching Override element, in which
* case the Override element takes precedence.
*/
if (this.container != null && this.container.getPart(partName) != null) {
throw new OpenXML4JRuntimeException(
"Rule M2.4 exception : this error should NEVER happen, if so please send a mail to the developers team, thanks !");
} else {
return null;
}
}