MongoDB.Bson.Serialization.Options.BsonBaseSerializationOptions.EnsureNotFrozen C# (CSharp) Метод

        protected void EnsureNotFrozen()
        {
            if (_isFrozen)
            {
                var message = string.Format("{0} is frozen.", BsonUtils.GetFriendlyTypeName(this.GetType()));
                throw new InvalidOperationException(message);
            }
        }
    }