Attempt #2 to add file leak detection

src/main/java/beam/utils/FileLeakDetector.java

@@ -0,0 +1,22 @@
+package beam.utils;
+
+import java.lang.management.ManagementFactory;
+import org.kohsuke.file_leak_detector.Main;
+
+public class FileLeakDetector {
+
+    public static String processPid() {
+        String name = ManagementFactory.getRuntimeMXBean().getName();
+        String[] split = name.split("@");
+        if (split.length != 2) {
+            throw new RuntimeException("Got unexpected process name: " + name);
+        }
+        return split[0];
+    }
+
+    public static void main(String[] args) {
+        String PID = processPid();
+//        Main fld = new Main();
+        Main.main(new String[] {PID, "test"});
+    }
+}