simple language: cleanup SimpleReference

simple_language_plugin/src/main/java/org/intellij/sdk/language/SimpleReference.java

@@ -1,4 +1,4 @@
-// Copyright 2000-2022 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2023 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 
 package org.intellij.sdk.language;
 
@@ -14,11 +14,11 @@
 import java.util.ArrayList;
 import java.util.List;
 
-public class SimpleReference extends PsiReferenceBase<PsiElement> implements PsiPolyVariantReference {
+final class SimpleReference extends PsiReferenceBase<PsiElement> implements PsiPolyVariantReference {
 
   private final String key;
 
-  public SimpleReference(@NotNull PsiElement element, TextRange textRange) {
+  SimpleReference(@NotNull PsiElement element, TextRange textRange) {
     super(element, textRange);
     key = element.getText().substring(textRange.getStartOffset(), textRange.getEndOffset());
   }
@@ -31,7 +31,7 @@ public SimpleReference(@NotNull PsiElement element, TextRange textRange) {
     for (SimpleProperty property : properties) {
       results.add(new PsiElementResolveResult(property));
     }
-    return results.toArray(new ResolveResult[results.size()]);
+    return results.toArray(new ResolveResult[0]);
   }
 
   @Nullable