Fix AbstractClassWithoutAnyMethods FN with inner classes

pmd-java/src/main/resources/category/java/design.xml

@@ -28,7 +28,7 @@ protected constructor in order to prevent instantiation than make the class misl
 <![CDATA[
 //ClassOrInterfaceDeclaration
     [@Abstract = 'true']
-    [count(.//MethodDeclaration) + count(.//ConstructorDeclaration) = 0]
+    [count(./ClassOrInterfaceBody/*/MethodDeclaration) + count(./ClassOrInterfaceBody/*/ConstructorDeclaration) = 0]
     [not(../Annotation/MarkerAnnotation/Name[pmd-java:typeIs('com.google.auto.value.AutoValue')])]
 ]]>
                 </value>

pmd-java/src/test/resources/net/sourceforge/pmd/lang/java/rule/design/xml/AbstractClassWithoutAnyMethod.xml

@@ -76,4 +76,37 @@ import com.google.auto.value.AutoValue;
 }
      ]]></code>
     </test-code>
+
+
+    <test-code>
+        <description>FN with nested class</description>
+        <expected-problems>1</expected-problems>
+        <expected-linenumbers>1</expected-linenumbers>
+        <code><![CDATA[
+abstract class Foo {
+
+    class Inner {
+        void ohio() {}
+    }
+
+}
+        ]]></code>
+    </test-code>
+
+    <test-code>
+        <description>FN with nested class</description>
+        <expected-problems>1</expected-problems>
+        <expected-linenumbers>3</expected-linenumbers>
+        <code><![CDATA[
+class Foo {
+
+    abstract class Pos {}
+
+    class Sibling {
+        void ohio() {}
+    }
+
+}
+        ]]></code>
+    </test-code>
 </test-data>