/**
* Add an extension to this connector. This method is protected to allow extensions to select
* which targets they can extend.
*
* @param extension the extension to add
*/
protected void addExtension(Extension extension) {
ClientConnector previousParent = extension.getParent();
if (previousParent == this) {
// Nothing to do, already attached
return;
} else if (previousParent != null) {
throw new IllegalStateException(
"Moving an extension from one parent to another is not supported");
}
extensions.add(extension);
extension.setParent(this);
markAsDirty();
}
