Added cursor pagination support to paged operations.

Tests/ASConnectService/Cases/Public/Extensions/PagedDocumentLinksTests.swift

@@ -0,0 +1,51 @@
+import Testing
+
+// A non-testable import ensures that the extension can be used from outside the module.
+import ASConnectService
+
+@Suite("PagedDocumentLinks")
+struct PagedDocumentLinksTests {
+    // MARK: Tests
+
+    @Test("Returns the cursor from the next link")
+    func returnsNextCursor() {
+        let links = Components.Schemas.PagedDocumentLinks(
+            _self: .Link.current,
+            next: "https://api.appstoreconnect.apple.com/v1/apps?cursor=Mg.ANmP3sY&limit=2"
+        )
+
+        #expect(links.nextCursor == "Mg.ANmP3sY")
+    }
+
+    @Test("Returns nil when there is no next link")
+    func returnsNilWithoutNextLink() {
+        let links = Components.Schemas.PagedDocumentLinks(_self: .Link.current)
+
+        #expect(links.nextCursor == nil)
+    }
+
+    @Test("Returns nil when the next link has no cursor")
+    func returnsNilWithoutCursor() {
+        let links = Components.Schemas.PagedDocumentLinks(
+            _self: .Link.current,
+            next: "https://api.appstoreconnect.apple.com/v1/apps?limit=2"
+        )
+
+        #expect(links.nextCursor == nil)
+    }
+
+    @Test("Passes the cursor to the query of a paged operation")
+    func passesCursorToQuery() {
+        let query = Operations.AppsGetCollection.Input.Query(limit: 2, cursor: "Mg.ANmP3sY")
+
+        #expect(query.cursor == "Mg.ANmP3sY")
+    }
+}
+
+// MARK: - String+Samples
+
+private extension String {
+    enum Link {
+        static let current: String = "https://api.appstoreconnect.apple.com/v1/apps?limit=2"
+    }
+}