FirstLevelCategoryDto.addChild(): introduce and use method.

No functional changes.

Author: php-coder

src/main/java/ru/mystamps/web/service/CategoryServiceImpl.java

@@ -145,11 +145,11 @@ public List<FirstLevelCategoryDto> findFirstLevelCategories(String lang) {
 					lastItem = new FirstLevelCategoryDto(name, slug);
 				} else {
 					lastItem = new FirstLevelCategoryDto(parent);
-					lastItem.getChildren().add(new EntityWithSlugDto(name, slug));
+					lastItem.addChild(slug, name);
 				}
 				items.add(lastItem);
 			} else {
-				lastItem.getChildren().add(new EntityWithSlugDto(name, slug));
+				lastItem.addChild(slug, name);
 			}
 		}
 

src/main/java/ru/mystamps/web/service/dto/FirstLevelCategoryDto.java

@@ -41,4 +41,8 @@ public FirstLevelCategoryDto(String name) {
 		this(name, null);
 	}
 
+	public void addChild(String slug, String name) {
+		children.add(new EntityWithSlugDto(name, slug));
+	}
+	
 }