Empty license in case of MS .net libraries

[iamrahul127]

Hi,
We are trying to setup license policy but come across case where <> doesn't report license ID as it doesn't find the one. BOM extract as follow. Please check licenses section in below. We only have URL.

{ "type": "library", "bom-ref": "pkg:nuget/[email protected]", "publisher": "Microsoft", "name": "System.Text.Encoding", "version": "4.3.0", "description": "Provides base abstract encoding classes for converting blocks of characters to and from blocks of bytes.\n\nCommonly Used Types:\nSystem.Text.Encoding\nSystem.Text.DecoderFallbackException\nSystem.Text.Decoder\nSystem.Text.EncoderFallbackException\nSystem.Text.Encoder\nSystem.Text.EncoderFallback\nSystem.Text.EncoderFallbackBuffer\nSystem.Text.DecoderFallback\nSystem.Text.DecoderFallbackBuffer\nSystem.Text.DecoderExceptionFallback\n \nWhen using NuGet 3.x this package requires at least version 3.4.", "scope": "required", "hashes": [ { "alg": "SHA-512", "content": "6FF7FEEC7313A7121F795EC7D376E4B8728C17294219FAFDFD4EA078F9DF1455B4685F0B3962C3810098E95D68594A8392C0B799D36EC8284CD6FCBD4CFE2C67" } ], "licenses": [ { "license": { "url": "http://go.microsoft.com/fwlink/?LinkId=329770" } } ], "copyright": "\u00A9 Microsoft Corporation. All rights reserved.", "purl": "pkg:nuget/[email protected]", "externalReferences": [ { "url": "https://dot.net/", "type": "website" } ] },

How do I set correct license policy in this case?