/**
* Sets the {@linkplain #rootTag} property.
*
* @param rootTag to be used as XML root tag
* @throws IllegalArgumentException if tag is null or empty
* @throws IllegalStateException if write isn't in initial state
*/
public void setRootTag(String rootTag) {
if (!XMLUtil.isLegalXMLTag(rootTag)) {
throw new IllegalArgumentException("rootTag: illegal: " + rootTag);
}
if (!this.isInitialState()) {
throw new IllegalStateException("writer write in progress");
}
this.checkNotSharedConfiguration();
this.rootTag = rootTag;
}
