fun assumeNotJdk9() {
      assumeTrue(getPlatformSystemProperty() != JDK9_PROPERTY)
    }

    fun assumeNotJdk8() {
      assumeTrue(getPlatformSystemProperty() != JDK8_PROPERTY)
    }

    fun assumeNotJdk8Alpn() {
      assumeTrue(getPlatformSystemProperty() != JDK8_ALPN_PROPERTY)
    }

    fun assumeNotOpenJSSE() {
      assumeTrue(getPlatformSystemProperty() != OPENJSSE_PROPERTY)
    }