public FieldVariable(ValueNumber ref, String className, String fieldName, String fieldSig) { this.ref = ref; this.className = className; this.fieldName = fieldName; this.fieldSig = fieldSig;
public FieldVariable(String className, String fieldName, String fieldSig) { this(null, className, fieldName, fieldSig);
	public FieldVariable(ValueNumber ref, String className, String fieldName, String fieldSig) {		this.ref = ref;		this.className = className;		this.fieldName = fieldName;		this.fieldSig = fieldSig;	}