@Override
	public String getFormat() {
		// special message used by filter when 'useRawMsg="true"'; this is the "raw" message used
		// by log4j when running its filter
		return "Format:GhidraScript" + getFormattedMessage();
	}
A simple {@link Message} implementation that allows us to use the filtering capability
of log4j.  This class has a formatted and unformatted message.  log4j writes the formatted
message out.  Our formatted message is the original message given to us.   We use the
unformatted message, in conjunction with a regex filter to allow for filtering such that
the script log file only has script messages.

<P>See log4j-appender-rolling-file-scripts.xml
Ghidra/Features/Base/src/main/java/ghidra/app/script/ScriptMessage.java