return object : TypeSafeMatcher<PlatformVersion>() {
        override fun describeTo(description: Description) {
          description.appendText("JDK with version from $version")
        }

        override fun matchesSafely(item: PlatformVersion): Boolean {
          return item.majorVersion >= version
        }
      }
    }

    fun onMajor(version: Int): Matcher<PlatformVersion> {