public Iterator<PcodeOpAST> getPcodeOps(Address refAddr) {
		if (hfunction == null) {
			return null;
		}
		Iterator<PcodeOpAST> piter = hfunction.getPcodeOps(refAddr.getPhysicalAddress());
		return piter;
	}
get the pcode ops that refer to an address
Ghidra/Features/Decompiler/ghidra_scripts/ShowCCallsScript.java