public static boolean isCompiledKotlinPackageClass(@NotNull JavaClass javaClass) {
   if (javaClass.getOriginKind() == JavaClass.OriginKind.COMPILED) {
     return javaClass.findAnnotation(JvmAnnotationNames.KOTLIN_PACKAGE) != null
         || javaClass.findAnnotation(JvmAnnotationNames.KOTLIN_PACKAGE_FRAGMENT) != null;
   }
   return false;
 }
  @NotNull
  public static Collection<JavaClass> getClassesInPackage(@NotNull JavaPackage javaPackage) {
    Collection<JavaClass> classes = javaPackage.getClasses();
    Set<FqName> addedQualifiedNames = new HashSet<FqName>(classes.size());
    List<JavaClass> result = new ArrayList<JavaClass>(classes.size());

    for (JavaClass javaClass : classes) {
      FqName fqName = javaClass.getFqName();
      if (fqName != null && addedQualifiedNames.add(fqName)) {
        result.add(javaClass);
      }
    }

    return result;
  }
  @Nullable
  @Override
  public ClassDescriptor getClass(@NotNull JavaClass javaClass) {
    FqName fqName = javaClass.getFqName();
    if (fqName != null && KotlinBuiltIns.BUILT_INS_PACKAGE_FQ_NAME.equals(fqName.parent())) {
      if (javaClass.findAnnotation(ASSERT_INVISIBLE_IN_RESOLVER_ANNOTATION) != null) {
        if (ApplicationManager.getApplication().isInternal()) {
          LOG.error(
              "Classpath is configured incorrectly:"
                  + " class "
                  + fqName
                  + " from runtime must not be loaded by compiler");
        }
        return null;
      }
    }

    return trace.get(CLASS, ((JavaClassImpl) javaClass).getPsi());
  }
  private static boolean hasStaticMembers(@NotNull JavaClass javaClass) {
    for (JavaMethod method : javaClass.getMethods()) {
      if (method.isStatic() && !shouldBeInEnumClassObject(method)) {
        return true;
      }
    }

    for (JavaField field : javaClass.getFields()) {
      if (field.isStatic() && !field.isEnumEntry()) {
        return true;
      }
    }

    for (JavaClass nestedClass : javaClass.getInnerClasses()) {
      if (SingleAbstractMethodUtils.isSamInterface(nestedClass)) {
        return true;
      }
      if (nestedClass.isStatic() && hasStaticMembers(nestedClass)) {
        return true;
      }
    }

    return false;
  }
 public static boolean isCompiledKotlinClass(@NotNull JavaClass javaClass) {
   if (javaClass.getOriginKind() == JavaClass.OriginKind.COMPILED) {
     return javaClass.findAnnotation(JvmAnnotationNames.KOTLIN_CLASS) != null;
   }
   return false;
 }