private boolean equal(@Nullable GradleModuleVersion version1, @Nullable GradleModuleVersion version2) {
            return version1 == version2 || version1 != null && version2 != null &&
                                           nullsafeEqual(version1.getName(), version2.getName()) &&
                                           nullsafeEqual(version1.getGroup(), version2.getGroup()) &&
                                           nullsafeEqual(version1.getVersion(), version2.getVersion());
          }
private boolean equal(@Nullable GradleModuleVersion version1, @Nullable GradleModuleVersion version2)