async fn execute_table_from_source_preparation(
request: TableFromSourcePreparation,
storage_configuration: &StorageConfiguration,
) -> Result<(PurifiedSourceExport, SourceFormatOptions), PlanError>async fn execute_table_from_source_preparation(
request: TableFromSourcePreparation,
storage_configuration: &StorageConfiguration,
) -> Result<(PurifiedSourceExport, SourceFormatOptions), PlanError>