[java] IDEA-255890 'Complete Current Statement' for vararg method like String.format works incorrectly

GitOrigin-RevId: 814641fd0562890897eec6e0a7f29c187f36c54c

java/java-impl/src/com/intellij/codeInsight/editorActions/smartEnter/MethodCallFixer.java

@@ -93,7 +93,7 @@ public class MethodCallFixer implements Fixer {
     int paramCount = Integer.MAX_VALUE;
     for (CandidateInfo candidate : PsiResolveHelper.SERVICE.getInstance(call.getProject()).getReferencedMethodCandidates(call, false)) {
       PsiElement element = candidate.getElement();
-      if (element instanceof PsiMethod) {
+      if (element instanceof PsiMethod && !((PsiMethod)element).isVarArgs()) {
         paramCount = Math.min(paramCount, ((PsiMethod)element).getParameterList().getParametersCount());
       }
     }

java/java-tests/testData/codeInsight/completeStatement/VarargMethod.java

@@ -0,0 +1,6 @@
+public class VarargMethod {
+    void test() {
+        List<String> list = new ArrayList<>();
+        list.add(String.format("m", p1, p2)<caret>
+    }
+}

java/java-tests/testData/codeInsight/completeStatement/VarargMethod_after.java

@@ -0,0 +1,6 @@
+public class VarargMethod {
+    void test() {
+        List<String> list = new ArrayList<>();
+        list.add(String.format("m", p1, p2));
+    }
+}

java/java-tests/testSrc/com/intellij/java/codeInsight/CompleteStatementTest.java

@@ -181,6 +181,7 @@ public class CompleteStatementTest extends EditorActionTestCase {
   public void testRecord() { doTest(); }
   public void testRecordWithComponent() { doTest(); }
   public void testRecordWithComponentNoBody() { doTest(); }
+  public void testVarargMethod() { doTest(); }
 
   private void doTestBracesNextLineStyle() {
     myJavaSettings.BRACE_STYLE = CommonCodeStyleSettings.NEXT_LINE;