DataSource
public final class DataSourceA query data source factory. The current data source supported is the database.
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                  Create a database data source. DeclarationSwift @available(*, deprecated, message: "Use DataSource.collection(database.defaultCollection(﹚﹚ instead.") public static func database(_ database: Database) -> DataSourceAsParametersdatabaseThe database object. Return ValueThe database data source. 
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                  Undocumented DeclarationSwift public static func collection(_ collection: Collection) -> DataSourceAs
 DataSource Class Reference
        DataSource Class Reference