protected void orderParameters() {
		int id = 0;
		for (InjectParameter element : inputlist) {
			element.setIndex(id);
			id += 1;
		}
		for (InjectParameter element : output) {
			element.setIndex(id);
			id += 1;
		}
	}
All input and output parameters must have a unique index.
Order them so that inputs come first, then outputs
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/lang/InjectPayloadSleigh.java