public Iterator<VarnodeAST> getVarnodes(Address addr) {
		return vbank.locRange(addr);
	}
return all Varnodes that start at a given Address
@param addr -- Address of Varnodes
@return -- Iterator to Varnodes
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/PcodeSyntaxTree.java