Missing doc/header

src/main/java/io/vertx/core/impl/SysProps.java

@@ -1,7 +1,22 @@
+/*
+ * Copyright (c) 2011-2024 Contributors to the Eclipse Foundation
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
+ * which is available at https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
+ */
 package io.vertx.core.impl;
 
 import java.io.File;
 
+/**
+ * Vert.x known system properties.
+ *
+ * @author <a href="mailto:[email protected]">Julien Viet</a>
+ */
 public enum SysProps {
 
  /**