Antlr4.Runtime.Sharpen.BitSet.ToString C# (CSharp) Метод

        public override string ToString()
        {
            StringBuilder builder = new StringBuilder();
            builder.Append('{');

            for (int i = NextSetBit(0); i >= 0; i = NextSetBit(i + 1))
            {
                if (builder.Length > 1)
                    builder.Append(", ");

                builder.Append(i);
            }

            builder.Append('}');
            return builder.ToString();
        }