public void setAdapter(ListAdapter adapter) {
        mAdapter = adapter;
        mSuggestionsListView.setAdapter(adapter);
        startFilter(mSearchSrcTextView.getText());
    }
Set Adapter for suggestions list. Should implement Filterable.

@param adapter
android/third_party/search/src/main/java/com/miguelcatalan/materialsearchview/MaterialSearchView.java