C#/Java: Rename the directories containing the model generator and tests.

java/ql/test/utils/modelgenerator/dataflow/p/Sources.java

@@ -0,0 +1,32 @@
+package p;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.ServerSocket;
+import java.net.URL;
+import java.util.function.Consumer;
+import java.util.List;
+
+
+public class Sources {
+    
+    public InputStream readUrl(final URL url) throws IOException {
+        return url.openConnection().getInputStream();
+    }
+
+    public InputStream socketStream() throws IOException {
+        ServerSocket socket = new ServerSocket(123);
+        return socket.accept().getInputStream();
+    }
+
+    public InputStream wrappedSocketStream() throws IOException {
+        return socketStream();
+    }
+
+    public void sourceToParameter(InputStream[] streams, List<InputStream> otherStreams) throws IOException {
+        ServerSocket socket = new ServerSocket(123);
+        streams[0] = socket.accept().getInputStream();
+        otherStreams.add(socket.accept().getInputStream());
+    }
+
+}