Add of() overloading with variable map entries.

vertx-core/src/main/java/io/vertx/core/json/JsonObject.java

@@ -395,6 +395,20 @@ public static JsonObject of(String k1, Object v1, String k2, Object v2, String k
     return obj;
   }
 
+  /**
+   * Create a JsonObject from the given map entries.
+   * @param entries All the map entries to add the JSON object.
+   * @return a JsonObject containing the specified mappings.
+   */
+  @SafeVarargs
+  public static JsonObject of(Map.Entry<String, Object>... entries) {
+    JsonObject obj = new JsonObject(new LinkedHashMap<>(entries.length));
+    for (Map.Entry<String, Object> entry : entries) {
+      obj.put(entry.getKey(), entry.getValue());
+    }
+    return obj;
+  }
+
   /**
    * Create a JsonObject from the fields of a Java object.
    * Faster than calling `new JsonObject(Json.encode(obj))`.

vertx-core/src/test/java/io/vertx/tests/json/JsonObjectTest.java

@@ -44,6 +44,22 @@ public void setUp() throws Exception {
     jsonObject = new JsonObject();
   }
 
+//  @Test
+//  public void testJsonObjectOfMapEntryArgs() {
+//    Map.Entry<String, Object> e1 = Map.entry("key1", "value1");
+//    Map.Entry<String, Object> e2 = Map.entry("key2", "value2");
+//    Map.Entry<String, Object> e3 = Map.entry("key3", "value3");
+//    Map.Entry<String, Object> e4 = Map.entry("key4", "value4");
+//    Map.Entry<String, Object> e5 = Map.entry("key5", "value5");
+//    JsonObject jobj = JsonObject.of(e1, e2, e3, e4, e5);
+//
+//    assertEquals("value1", jobj.getString("key1"));
+//    assertEquals("value2", jobj.getString("key2"));
+//    assertEquals("value3", jobj.getString("key3"));
+//    assertEquals("value4", jobj.getString("key4"));
+//    assertEquals("value5", jobj.getString("key5"));
+//  }
+
   @Test
   public void testGetInteger() {
     jsonObject.put("foo", 123);