### Question:
PmdTemplate { static LanguageVersion languageVersion(String javaVersion) { String version = normalize(javaVersion); LanguageVersion languageVersion = new JavaLanguageModule().getVersion(version); if (languageVersion == null) { throw new IllegalArgumentException("Unsupported Java version for PMD: " + version); } LOG.info("Java version: " + version); return languageVersion; } PmdTemplate(PMDConfiguration configuration, SourceCodeProcessor processor); static PmdTemplate create(String javaVersion, ClassLoader classloader, Charset charset); void process(InputFile file, RuleSets rulesets, RuleContext ruleContext);  }### Answer:
@Test void java12_version() { assertThat(PmdTemplate.languageVersion("1.2").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java5_version() { assertThat(PmdTemplate.languageVersion("5").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java6_version() { assertThat(PmdTemplate.languageVersion("6").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java7_version() { assertThat(PmdTemplate.languageVersion("7").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java8_version() { assertThat(PmdTemplate.languageVersion("8").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java9_version() { assertThat(PmdTemplate.languageVersion("9").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java9_version_with_outdated_versioning_scheme() { assertThat(PmdTemplate.languageVersion("1.9").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java10_version() { assertThat(PmdTemplate.languageVersion("10").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java10_version_with_outdated_versioning_scheme() { assertThat(PmdTemplate.languageVersion("1.10").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java11_version() { assertThat(PmdTemplate.languageVersion("11").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java11_version_with_outdated_versioning_scheme() { assertThat(PmdTemplate.languageVersion("1.11").getLanguageVersionHandler()).isInstanceOf(JavaLanguageHandler.class); }
@Test void java5_version() { assertThat(PmdTemplate.languageVersion("5").getLanguageVersionHandler()).isInstanceOf(Java15Handler.class); }
@Test void java6_version() { assertThat(PmdTemplate.languageVersion("6").getLanguageVersionHandler()).isInstanceOf(Java16Handler.class); }
@Test void java7_version() { assertThat(PmdTemplate.languageVersion("7").getLanguageVersionHandler()).isInstanceOf(Java17Handler.class); }
@Test void java8_version() { assertThat(PmdTemplate.languageVersion("8").getLanguageVersionHandler()).isInstanceOf(Java18Handler.class); }
@Test void java12_version() { assertThat(PmdTemplate.languageVersion("1.2").getLanguageVersionHandler()).isInstanceOf(Java13Handler.class); }