protected void setTemplate(ConstructTpl ctl) {
		pcodeTemplate = ctl;
		isfallthru = computeFallThru();
	}
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