year_2020/src/main/java/nl/mwensveen/adventofcode/year_2020/day_21/AllergenInput.java
public Builder addIngredients(String... ingredientsElements) {
            if (ingredientsElements == null) {
                throw new IllegalArgumentException("ingredientsElements is null");
            }
            Collections.addAll(this.ingredients, ingredientsElements);
            return this;
        }
/**
         * Adds to the {@link #ingredients} property of this builder
         *
         * @param ingredients
         * @return this builder
         * @throws IllegalArgumentException if ingredients is null or contains a null element
         */
Adds to the  #ingredients property of this builder
@param ingredients
@return this builder
@throws IllegalArgumentException if ingredients is null or contains a null element
Adds to the #ingredients property of this builder @param ingredients @return this builder @throws IllegalArgumentException if ingredients is null or contains a null element
public Builder addIngredients(String... ingredientsElements) {
            if (ingredientsElements == null) {
                throw new IllegalArgumentException("ingredientsElements is null");
            }
            Collections.addAll(this.ingredients, ingredientsElements);
            return this;
        }
public Builder addIngredients ( String ... ingredientsElements ) { if ( ingredientsElements == null ) { throw new IllegalArgumentException ( "ingredientsElements is null" ) ; } Collections . addAll ( this . ingredients , ingredientsElements ) ; return this ; }
Adds to the {@link #ingredients} property of this builder
 @param ingredients
 @return this builder
 @throws IllegalArgumentException if ingredients is null or contains a null element
Adds to the { @link #ingredients } property of this builder @param ingredients @return this builder @throws IllegalArgumentException if ingredients is null or contains a null element