private String getOpKey(PcodeOpAST op) {
		SequenceNumber sq = op.getSeqnum();
		String id =
			sq.getTarget().toString(true) + " o " + Integer.toString(op.getSeqnum().getTime());
		return id;
	}
Task for creating PCode data flow graphs from decompiler output
Ghidra/Features/Decompiler/src/main/java/ghidra/app/plugin/core/decompile/actions/PCodeDfgGraphTask.java