MainActivity.java

        RxSearch.fromSearchView(searchView)
                .debounce(300, TimeUnit.MILLISECONDS)
                .filter(item -> item.length() > 1)
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(query -> {
                    adapter.setNamesList(namesAPI.searchForName(query));
                    adapter.notifyDataSetChanged();
                    apiCallsTextView.setText("API CALLS: " + apiCalls++);
                });