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Setup Artifact binding
In order to use Artifact binding, set TElSAMLServiceProvider.SPToIDPBinding property to TSBSAMLBindingType.sbtArtifact. Initialize TElSAMLServiceProvider.ArtifactStorage property with an instance of TElMemoryArtifactStorage class. One instance of TElMemoryArtifactStorage can be shared between multiple TElSAMLServiceProvider objects.