preserve arguments list for enum constant on implement methods (IDEA-67719)

java/java-impl/src/com/intellij/codeInsight/intention/impl/ImplementAbstractMethodHandler.java

@@ -164,8 +164,9 @@ public class ImplementAbstractMethodHandler {
   }
 
   public static PsiClass addClassInitializer(PsiEnumConstant enumConstant) {
+    final PsiExpressionList argumentList = enumConstant.getArgumentList();
     final PsiEnumConstant constantFromText = JavaPsiFacade.getElementFactory(enumConstant.getProject()).createEnumConstantFromText(
-      enumConstant.getName() + "{}", enumConstant);
+      enumConstant.getName() + (argumentList != null ? argumentList.getText() : "") + "{}", enumConstant);
     final PsiEnumConstant replace = (PsiEnumConstant)enumConstant.replace(constantFromText);
 
     return replace.getInitializingClass();

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/copyAbstractMethodImplementation/afterEnumConstantWithArgs.java

@@ -0,0 +1,15 @@
+// "Use existing implementation of 'm'" "true"
+enum I {
+    A("a") {
+        void m() {
+            <selection><caret>System.out.println("");</selection>
+        }
+    },
+    B("b") {
+        public void m() {
+            System.out.println("");
+        }
+    };
+    abstract void m();
+    I(String s){}
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/copyAbstractMethodImplementation/beforeEnumConstantWithArgs.java

@@ -0,0 +1,11 @@
+// "Use existing implementation of 'm'" "true"
+enum I {
+    A("a"),
+    B("b") {
+        public void m() {
+            System.out.println("");
+        }
+    };
+    abstract void <caret>m();
+    I(String s){}
+}