IDEA-133946 Don't highlight private constructor as unused if it is called by dependency injection engine

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/unusedDecls/PrivateConstructor.java

@@ -0,0 +1,14 @@
+import java.lang.Override;
+
+class PrivateConstructor {
+  private final int myA;
+
+  private PrivateConstructor(int a) {
+    myA = a;
+  }
+
+  @Override
+  public int hashCode() {
+    return myA;
+  }
+}