IsEmpty() public method

The is empty.
public IsEmpty ( ) : bool
return bool
 public void IsEmptyTest()
 {
     string str = "s";
     var emptyChain = new ComplexChain(string.Empty);
     Assert.True(emptyChain.IsEmpty());
     emptyChain.Concat(str);
     Assert.True(!emptyChain.IsEmpty());
     emptyChain.ClearAt(0);
     Assert.True(emptyChain.IsEmpty());
 }
        /// <summary>
        /// The concat.
        /// </summary>
        /// <param name="sequence">
        /// The sequence.
        /// </param>
        /// <returns>
        /// The <see cref="ComplexChain"/>.
        /// </returns>
        public ComplexChain Concat(ComplexChain sequence)
        {
            if (sequence.IsEmpty())
            {
                return this;
            }

            ComplexChain temp = Clone();

            ClearAndSetNewLength(GetLength() + sequence.GetLength());
            for (int i = 0; i < temp.GetLength(); i++)
            {
                this[i] = temp[i];
            }

            for (int j = 0; j < sequence.GetLength(); j++)
            {
                this[j + temp.GetLength()] = sequence[j];
            }

            return this;
        }