public override bool Equals(object obj)
        {
            DefaultExpressionFingerprint other = obj as DefaultExpressionFingerprint;

            return((other != null) &&
                   this.Equals(other));
        }
        public override bool Equals(object obj)
        {
            DefaultExpressionFingerprint defaultExpressionFingerprint = obj as DefaultExpressionFingerprint;

            return(defaultExpressionFingerprint != null && base.Equals(defaultExpressionFingerprint));
        }