@Override
	public void setPrimaryMemoryReference(Reference ref) {
		if (refMgr == null)
			throw new UnsupportedOperationException();
		refMgr.setPrimary(ref, true);
	}
Get ALL reference FROM this code unit.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/util/PseudoCodeUnit.java