Apache.Shiro.Session.Management.SimpleSession.RemoveAttribute C# (CSharp) Method

        public object RemoveAttribute(object key)
        {
            if (Attributes == null)
            {
                return null;
            }

            object value;
            if (Attributes.TryGetValue(key, out value))
            {
                Attributes.Remove(key);
            }
            return value;
        }