public void AddAllUnique(string key, IEnumerable values)
        {
            if (string.IsNullOrEmpty(key))
            {
                throw new ArgumentNullException(nameof(key));
            }
            if (values == null)
            {
                throw new ArgumentNullException(nameof(values));
            }
            ParseAddUniqueOperation op = new ParseAddUniqueOperation(new List <object>(values.Cast <object>()));

            ApplyOperation(key, op);
        }
        public void AddUnique(string key, object value)
        {
            if (string.IsNullOrEmpty(key))
            {
                throw new ArgumentNullException(nameof(key));
            }
            if (value == null)
            {
                throw new ArgumentNullException(nameof(value));
            }
            ParseAddUniqueOperation op = new ParseAddUniqueOperation(new List <object> {
                value
            });

            ApplyOperation(key, op);
        }