Why is the list of derived classes incomplete?

[The-Futurist]

I'm looking at a text file here and .Net tells me the Encoding class is SBCSCodePageEncoding, yet this does not appear in the above documentation as one of the derived encoding classes, why is this?

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• ID: e108a631-9747-7d6e-dc36-280b0591cd68
• Version Independent ID: f630aa07-55fd-5352-f0c3-bd2e263cd70b
• Content: Encoding Class (System.Text)
• Content Source: xml/System.Text/Encoding.xml
• Product: dotnet-api
• GitHub Login: @rpetrusha
• Microsoft Alias: ronpet

[svick]

Because SBCSCodePageEncoding is an internal class. So you might see an instance of it at runtime, but it should not be mentioned in the API reference, because it's an implementation detail.