System.Security.Permissions.ReflectionPermission.Copy C# (CSharp) Method

        public override IPermission Copy()
        {
            return this;
        }

        /// <summary>Creates and returns a permission that is the intersection of the current permission and the specified permission.</summary>
        /// <returns>A new permission that represents the intersection of the current permission and the specified permission. This new permission is null if the intersection is empty.</returns>
        /// <param name="target">A permission to intersect with the current permission. It 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 IPermission Intersect(IPermission target)
        {
            ReflectionPermission reflectionPermission = this.Cast(target);

            if (reflectionPermission == null)
            {
                return(null);
            }
            if (this.IsUnrestricted())
            {
                if (reflectionPermission.Flags == ReflectionPermissionFlag.NoFlags)
                {
                    return(null);
                }
                return(reflectionPermission.Copy());
            }
            else
            {
                if (!reflectionPermission.IsUnrestricted())
                {
                    ReflectionPermission reflectionPermission2 = (ReflectionPermission)reflectionPermission.Copy();
                    reflectionPermission2.Flags &= this.flags;
                    return((reflectionPermission2.Flags != ReflectionPermissionFlag.NoFlags) ? reflectionPermission2 : null);
                }
                if (this.flags == ReflectionPermissionFlag.NoFlags)
                {
                    return(null);
                }
                return(this.Copy());
            }
        }