Toolbar overflow menu context

public class ReturnVisitsAdapter extends RealmRecyclerViewAdapter<ReturnVisit> {


    private class ReturnViewHolder extends RecyclerView.ViewHolder {

        public android.support.v7.widget.Toolbar mCardViewToolbar;
        public TextView mEmail;
        public TextView mAddress;
        public TextView mPhone;


        public ReturnViewHolder(View view) {
            super(view);

            mCardViewToolbar = (android.support.v7.widget.Toolbar) view.findViewById(R.id.textViewRecyclerCardViewToolbar);
            mEmail = (TextView) view.findViewById(R.id.textViewRecyclerCardViewEmail);
            mAddress = (TextView) view.findViewById(R.id.textViewRecyclerCardViewAddress);
            mPhone = (TextView) view.findViewById(R.id.textViewRecyclerCardViewPhone);
        }
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int i) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.returnvisit_card_view, parent, false);
        return new ReturnViewHolder(view);
    }

    @Override
    public void onBindViewHolder(final RecyclerView.ViewHolder viewHolder, int i) {
        final ReturnViewHolder returnViewHolder = (ReturnViewHolder) viewHolder;
        final ReturnVisit returnVisit = getItem(i);
        returnViewHolder.mCardViewToolbar.setTitle(returnVisit.getName());
        returnViewHolder.mEmail.setText(returnVisit.getEmail());
        returnViewHolder.mAddress.setText(returnVisit.getAddress());
        returnViewHolder.mPhone.setText(String.valueOf(returnVisit.getPhone()));

        if (returnViewHolder.mCardViewToolbar.getMenu().size() == 0) {
            returnViewHolder.mCardViewToolbar.inflateMenu(R.menu.cardview_menu);
            returnViewHolder.mCardViewToolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
                @Override
                public boolean onMenuItemClick(MenuItem menuItem) {
//                     Handle item selection
                    switch (menuItem.getItemId()) {
                        case R.id.menuCardViewCall:
//                        callNumber();
                            return true;
                        case R.id.menuCardViewMessage:
//                        sendTextWithDefaultTextApp();
                            return true;
                        case R.id.menuCardViewEmail:
//                        sendEmailWithEmailApp();
                            return true;
                        case R.id.menuCardViewDelete:
//                            TODO find out how to get context into this menu.
//                            Realm realm = Realm.getInstance(CONTEXT GOES HERE);
//                            realm.executeTransaction(new Realm.Transaction() {
//                                @Override
//                                public void execute(Realm realm) {
//                                    returnVisit.removeFromRealm();
//
//                                }
//                            });

                            notifyDataSetChanged();

                            return true;
                        default:
                            return false;
                    }
                }
            });
        }
    }

    /* The inner RealmBaseAdapter
     * view count is applied here.
     *
     * getRealmAdapter is defined in RealmRecyclerViewAdapter.
     */
    @Override
    public int getItemCount() {
        if (getRealmAdapter() != null) {
            return getRealmAdapter().getCount();
        }
        return 0;
    }
}