using System.Text; namespace Pizza { internal static class StringBuilderExtensions { /// /// Extensions for adding new lines of specific value. /// /// Extended class. /// Value which will be repeated. /// Number of lines that will be appended. public static void AppendLine(this StringBuilder stringBuilder, string value, int numberOfLines) { for (int i = 0; i < numberOfLines; i++) { stringBuilder.AppendLine(value); } } } }