comment and access fixes for RecipeService

server/src/main/java/service/RecipeService.java

@@ -24,22 +24,22 @@ public class RecipeService {
         this.recipeIngredientRepository = recipeIngredientRepository;
     }
 
-    Optional<Recipe> findById(Long id) {
+    public Optional<Recipe> findById(Long id) {
         return recipeRepository.findById(id);
     }
 
-    List<Recipe> findAll() {
+    public List<Recipe> findAll() {
         return recipeRepository.findAll();
     }
 
-    List<Recipe> findAll(int limit) {
+    public List<Recipe> findAll(int limit) {
         return recipeRepository.findAll(PageRequest.of(0, limit)).toList();
     }
 
     /**
      * Creates a new recipe. Returns empty if the recipe with the same name already exists.
      * @param recipe Recipe to be saved in the db.
-     * @return The created recipe (the recipe arg with a new assigned id).
+     * @return The created recipe (the recipe arg with a new assigned id) or empty if it already exists in db.
      */
     public Optional<Recipe> create(Recipe recipe) {
         if (recipeRepository.existsByName(recipe.getName())) {