@Override
	public void setStackReference(int opIndex, int offset, SourceType sourceType, RefType refType) {
		if (refMgr == null)
			throw new UnsupportedOperationException();
		validateOpIndex(opIndex);
		refMgr.addStackReference(address, opIndex, offset, refType, sourceType);
	}
Get ALL reference FROM this code unit.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/util/PseudoCodeUnit.java