adding Groovy check for Method retrival.

Author: Shounaks

jr-objects/src/main/java/com/fasterxml/jackson/jr/ob/impl/BeanPropertyIntrospector.java

@@ -117,7 +117,7 @@ private static void _introspect(Class<?> currType, Map<String, PropBuilder> prop
             // 13-Jun-2015, tatu: Skip synthetic, bridge methods altogether, for now
             //    at least (add more complex handling only if absolutely necessary)
             if (Modifier.isStatic(flags)
-                    || m.isSynthetic() || m.isBridge()) {
+                    || m.isSynthetic() || m.isBridge() || isGroovyMetaClass(m.getReturnType())) {
                 continue;
             }
             Class<?> argTypes[] = m.getParameterTypes();

jr-objects/src/test/java/com/fasterxml/jackson/jr/GroovyTest.groovy

@@ -7,15 +7,52 @@ class GroovyTest extends TestBase {
 
     void testSimpleObject() throws Exception {
         var data = JSON.std.asString(new MyClass())
-        var expected = "{\"aDouble\":0.0,\"aStr\":\"stringData\",\"anInt\":0,\"metaClass\":{}}";
+        var expected = """{"AAAAA_A_Field_Starting_With_Two_Capital_Letters":"XYZ","aDouble":0.0,"aPublicInitializedInteger":56,"aPublicInitializedIntegerObject":1516,"aPublicUninitializedInteger":0,"anInitializedIntegerObject":1112,"anInitializedPublicString":"stringData","anInitializedString":"ABC","anInteger":0,"anIntegerWithValue":12}"""
         assertEquals(data, expected)
     }
 
     private class MyClass {
-        public int anInt;                       //testing groovy primitive
-        public String aStr = "stringData";      //testing allocated object
+        int anInteger
+        int anIntegerWithValue = 12
 
-        public double aDouble;                  //
-        public Double aDoublesd;                //testing boxing object
+        static int anStaticInteger = 34
+        static int anStaticIntegerWithValue = 34
+
+        public int aPublicUninitializedInteger
+        public int aPublicInitializedInteger = 56
+
+        private int aPrivateUninitializedInteger
+        private int aPrivateInitializedInteger = 78
+
+        public static int aPublicStaticUninitializedInteger
+        public static int aPublicStaticInitializedInteger = 910
+
+        Integer anIntegerObject
+        Integer anInitializedIntegerObject = 1112
+
+        static Integer aStaticIntegerObject
+        static Integer aStaticInitializedIntegerObject = 1314
+
+        public Integer aPublicUninitializedIntegerObject
+        public Integer aPublicInitializedIntegerObject = 1516
+
+        public static Integer aPublicStaticUninitializedIntegerObject
+        public static Integer aPublicStaticInitializedIntegerObject = 1718
+
+        String aString
+        String anInitializedString = "ABC"
+
+        static String aStaticString = "jacksonJR"
+
+        public String aPublicString
+        public String anInitializedPublicString = "stringData"
+
+        public String AAAAA_A_Field_Starting_With_Two_Capital_Letters = "XYZ"
+        //Other Items
+        public static String staticStr = "jacksonJR"        // Public Static Object
+        static int anStaticInt                              // Uninitialized Static Object
+        public double aDouble                               // uninitialized primitive
+        public Double aDoubleObject                         // testing boxing object
+        private int hiddenvalue = 123                       // private value
     }
 }