https://learn.microsoft.com/en-us/dotnet/api/azure.search.documents.indexes.models.knowledgesource?view=azure-dotnet-preview
KnowledgeSource Class (Azure.Search.Documents.Indexes.Models) - Azure for .NET Developers |...
Represents a knowledge source definition. Please note this is the abstract base class. The derived classes available for instantiation are:...
azure searchclassdocumentsindexesmodels