}


    public boolean isJava5() {
        return this == VERSION_1_5;
    }

    public boolean isJava6() {
        return this == VERSION_1_6;
    }

    public boolean isJava7() {
        return this == VERSION_1_7;
    }

    public boolean isJava8() {
        return this == VERSION_1_8;
    }

    public boolean isJava9() {
        return this == VERSION_1_9;
    }

                }
            }
        """

        when:
        def ideaProject = loadIdeaProjectModel()

        then:

        ideaProject.javaLanguageSettings.languageLevel.isJava5()
        // modules
        ideaProject.modules.find { it.name == 'root' }.javaLanguageSettings == null
        ideaProject.modules.find { it.name == 'child1' }.javaLanguageSettings == null

        expect:
        JavaVersion.current() == current
        JavaVersion.current().java6 == isJava6
        JavaVersion.current().java7 == isJava7
        JavaVersion.current().java8 == isJava8
        JavaVersion.current().java9 == isJava9
        JavaVersion.current().java10 == isJava10
        JavaVersion.current().java11 == isJava11
        JavaVersion.current().java12 == isJava12

        }
        return stackTrace;
    }

    @SuppressWarnings("Since15")
    private static List<? extends Throwable> extractSuppressed(Throwable throwable) {
        if (isJava7()) {
            return Arrays.asList(throwable.getSuppressed());
        }
        return Collections.emptyList();
    }

    @SuppressWarnings("MixedMutabilityReturnType")