asUserPreferenceExtractionOverrideOrNull
Casts this CustomExtractionConfigurationInput as a UserPreferenceExtractionOverride and retrieves its aws.sdk.kotlin.services.bedrockagentcorecontrol.model.UserPreferenceOverrideExtractionConfigurationInput value. Returns null if the CustomExtractionConfigurationInput is not a UserPreferenceExtractionOverride.