@Override
	public int compareTo(TraceSpan that) {
		if (this == that) {
			return 0;
		}
		int result;
		result = this.trace.getName().compareTo(that.getTrace().getName());
		if (result != 0) {
			return result;
		}
		result = this.span.compareTo(that.getSpan());
		if (result != 0) {
			return result;
		}
		return 0;
	}
NOTE: This is used to mark <trace,snap>; regardless of whether that snapshot is actually in the
database.... Cannot just use TraceSnapshot here.
Ghidra/Debug/Framework-TraceModeling/src/main/java/ghidra/trace/model/DefaultTraceSpan.java