@Override
  public PsiClass moveClass(@NotNull PsiClass aClass, @NotNull PsiClass targetClass) {
    if (aClass.getLanguage() != JavaLanguage.INSTANCE) {
      return null;
    }

    ChangeContextUtil.encodeContextInfo(aClass, true);
    PsiClass newClass = (PsiClass)targetClass.addBefore(aClass, targetClass.getRBrace());
    if (targetClass.isInterface()) {
      PsiUtil.setModifierProperty(newClass, PsiModifier.PACKAGE_LOCAL, true);
    }
    else if (!newClass.isEnum()) {
      PsiUtil.setModifierProperty(newClass, PsiModifier.STATIC, true);
    }
    return (PsiClass)ChangeContextUtil.decodeContextInfo(newClass, null, null);
  }
@Override
  public PsiClass moveClass(@NotNull PsiClass aClass, @NotNull PsiClass targetClass)