<commit_before>package de.czyrux.storesample.core.domain.cart;

import rx.Observable;

public class CartService {

    private final CartDataSource cartDataSource;

    public CartService(CartDataSource cartDataSource) {
        this.cartDataSource = cartDataSource;
    }

    public Observable<Cart> getCart() {
        return cartDataSource.getCart();
    }

    public Observable<Void> addArticle(CartArticle cartArticle) {
        return cartDataSource.addArticle(cartArticle);
    }

    public Observable<Void> removeArticle(CartArticle cartArticle) {
        return cartDataSource.removeArticle(cartArticle);
    }

    private void updateCartStore() {
    }

    private void updateCartStore(Cart cart) {

    }
}<commit_msg>Proper return values<commit_after>package de.czyrux.storesample.core.domain.cart;

import de.czyrux.storesample.util.Null;
import rx.Observable;

public class CartService {

    private final CartDataSource cartDataSource;

    public CartService(CartDataSource cartDataSource) {
        this.cartDataSource = cartDataSource;
    }

    public Observable<Cart> getCart() {
        return cartDataSource.getCart();
    }

    public Observable<Null> addArticle(CartArticle cartArticle) {
        return cartDataSource.addArticle(cartArticle);
    }

    public Observable<Null> removeArticle(CartArticle cartArticle) {
        return cartDataSource.removeArticle(cartArticle);
    }

    private void updateCartStore() {
    }

    private void updateCartStore(Cart cart) {

    }
}
{'fraction_non_alphanumeric': 0.08118811881188119, 'fraction_numerical': 0.0, 'mean_word_length': 3.664615384615385, 'pattern_counts': {'":': 0, '<': 9, '<?xml version=': 0, '>': 9, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '7251623', 'n_tokens_mistral': 432, 'n_tokens_neox': 399, 'n_words': 84}