public PluginException getPluginException(PluginException e) {
		if (e == null) {
			return this;
		}
		return new PluginException(e.getMessage() + "\n" + getMessage());
	}
Creates a new PluginException by appending the message from 
this exception to the message of the given exception if it
is not null. If e is null, returns this exception.
@param e exception whose message will be appended to this
exceptions message if e is not null
@return this exception if e is null, or a new exception
Ghidra/Framework/Project/src/main/java/ghidra/framework/plugintool/util/PluginException.java