System.Security.Permissions.EnvironmentPermission.IsUnrestricted C# (CSharp) Method

        public bool IsUnrestricted()
        {
            return false;
        }

        /// <summary>Determines whether the current permission is a subset of the specified permission.</summary>
        /// <returns>true if the current permission is a subset of the specified permission; otherwise, false.</returns>
        /// <param name="target">A permission that is to be tested for the subset relationship. This permission must be of the same type as the current permission. </param>
        /// <exception cref="T:System.ArgumentException">The <paramref name="target" /> parameter is not null and is not of the same type as the current permission. </exception>
        public override bool IsSubsetOf(IPermission target)
        {
            EnvironmentPermission environmentPermission = this.Cast(target);

            if (environmentPermission == null)
            {
                return(false);
            }
            if (this.IsUnrestricted())
            {
                return(environmentPermission.IsUnrestricted());
            }
            if (environmentPermission.IsUnrestricted())
            {
                return(true);
            }
            foreach (object obj in this.readList)
            {
                string item = (string)obj;
                if (!environmentPermission.readList.Contains(item))
                {
                    return(false);
                }
            }
            foreach (object obj2 in this.writeList)
            {
                string item2 = (string)obj2;
                if (!environmentPermission.writeList.Contains(item2))
                {
                    return(false);
                }
            }
            return(true);
        }