DBquires _ loadClass

    public static void loadAddresses(final Context context, final Dialog dialog){
        adddressesModelList.clear();
        firebaseFirestore.collection("USERS").document(
                FirebaseAuth.getInstance().getUid())
                .collection("USER_DATA")
                .document("MY_ADDRESSES")
                .get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
            @Override
            public void onComplete(@NonNull Task<DocumentSnapshot> task) {
                if(task.isSuccessful()){

                    Intent delivery;

                    if((long)task.getResult().get("list_size") == 0){
                        delivery = new Intent(context,AddAddressActivity.class);
                        delivery.putExtra("INTENT","deliveryIntent");
                    }else {
                        for(long x = 1; x<(long)task.getResult().get("list_size") +1;x++){
                            adddressesModelList.add(new AdddressesModel(
                                    task.getResult().get("fullname_"+x).toString(),
                                    task.getResult().get("address_"+x).toString(),
                                    task.getResult().get("pincode_"+x).toString(),
                                    (boolean)task.getResult().get("selected_"+x)));
                            if((boolean)task.getResult().get("selected_"+x)){
                                selectedAddress = Integer.parseInt(String.valueOf(x - 1));
                            }
                        }
                        delivery = new Intent(context,DeliveryActivity.class);

                    }
                    context.startActivity(delivery);
                }else{
                    String error = task.getException().getMessage();
                    Toast.makeText(context,error,Toast.LENGTH_SHORT).show();
                }
                dialog.dismiss();
            }
        });
    }