private Label clone(Label label) {
			return labelMap.computeIfAbsent(label, l -> new Label());
		}
@param cv
		Parent visitor where the copy will be applied in.
@param member
		Member to copy.
@param copyName
		Name of copied member.
recaf-core/src/main/java/software/coley/recaf/util/visitors/MemberCopyingVisitor.java