public void setProductList()

in BasicSample/app/src/main/java/com/example/android/persistence/ui/ProductAdapter.java [47:82]
33 lines of code
5 McCabe index (conditional complexity)

    public void setProductList(final List<? extends Product> productList) {
        if (mProductList == null) {
            mProductList = productList;
            notifyItemRangeInserted(0, productList.size());
        } else {
            DiffUtil.DiffResult result = DiffUtil.calculateDiff(new DiffUtil.Callback() {
                @Override
                public int getOldListSize() {
                    return mProductList.size();
                }

                @Override
                public int getNewListSize() {
                    return productList.size();
                }

                @Override
                public boolean areItemsTheSame(int oldItemPosition, int newItemPosition) {
                    return mProductList.get(oldItemPosition).getId() ==
                            productList.get(newItemPosition).getId();
                }

                @Override
                public boolean areContentsTheSame(int oldItemPosition, int newItemPosition) {
                    Product newProduct = productList.get(newItemPosition);
                    Product oldProduct = mProductList.get(oldItemPosition);
                    return newProduct.getId() == oldProduct.getId()
                            && TextUtils.equals(newProduct.getDescription(), oldProduct.getDescription())
                            && TextUtils.equals(newProduct.getName(), oldProduct.getName())
                            && newProduct.getPrice() == oldProduct.getPrice();
                }
            });
            mProductList = productList;
            result.dispatchUpdatesTo(this);
        }
    }