Capture argument->return value flows

java/ql/test/utils/model-generator/p/ParamFlow.java

@@ -0,0 +1,59 @@
+package p;
+
+import java.util.Iterator;
+import java.util.List;
+import java.io.IOException;
+import java.io.OutputStream;
+
+
+public class ParamFlow {
+
+    public String returnsInput(String input) {
+        return input;
+    }
+
+    public int ignorePrimitiveReturnValue(String input) {
+        return input.length();
+    }
+
+    public String returnMultipleParameters(String one, String two) {
+        if (System.currentTimeMillis() > 100) {
+            return two;
+        }
+        return one;
+    }
+
+    public String returnArrayElement(String[] input) {
+        return input[0];
+    }
+
+    public String returnVarArgElement(String... input) {
+        return input[0];
+    }
+
+    public String returnCollectionElement(List<String> input) {
+        return input.get(0);
+    }
+
+    public String returnIteratorElement(Iterator<String> input) {
+        return input.next();
+    }
+
+    public String returnIterableElement(Iterable<String> input) {
+        return input.iterator().next();
+    }
+
+    public Class<?> mapType(Class<?> input) {
+        return input;
+    }
+
+    public void writeChunked(byte[] data, OutputStream output)
+            throws IOException {
+        output.write(data, 0, data.length);
+    }
+
+    public void addTo(String data, List<String> target) {
+        target.add(data);
+    }
+
+}