Scenario: Pennyworth’s Haberdashery, a long-standing retail company with multiple stores across Greater London, has recently expanded by acquiring a clothing line in Madrid. During the integration process, the company is migrating its content into Microsoft Azure. To streamline its machine learning workflow, Alfred Pennyworth is leveraging pipelines for optimization. As part of this effort, he must create a reference to the data source location to ensure that data is successfully passed to the first pipeline component. Question: Which class should Alfred use to define and reference the data source within an Azure Machine Learning pipeline?