apm-agent-core/src/main/java/co/elastic/apm/agent/util/VersionUtils.java [63:117]:
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    @Nullable
    public static String getVersion(Class<?> clazz, String groupId, String artifactId) {
        String version = versionsCache.get(clazz);
        if (version != null) {
            return version != UNKNOWN_VERSION ? version : null;
        }
        version = getVersionFromPomProperties(clazz, groupId, artifactId);
        if (version == null) {
            version = getVersionFromPackage(clazz);
        }
        versionsCache.put(clazz, version != null ? version : UNKNOWN_VERSION);
        return version;
    }

    @Nullable
    static String getVersionFromPackage(Class<?> clazz) {
        Package pkg = clazz.getPackage();
        if (pkg != null) {
            return pkg.getImplementationVersion();
        }
        return null;
    }

    @Nullable
    static String getVersionFromPomProperties(Class<?> clazz, String groupId, String artifactId) {
        final String classpathLocation = "/META-INF/maven/" + groupId + "/" + artifactId + "/pom.properties";
        final Properties pomProperties = getFromClasspath(classpathLocation, clazz);
        if (pomProperties != null) {
            return pomProperties.getProperty("version");
        }
        return null;
    }

    @Nullable
    private static Properties getFromClasspath(String classpathLocation, Class<?> clazz) {
        final Properties props = new Properties();
        try (InputStream resourceStream = clazz.getResourceAsStream(classpathLocation)) {
            if (resourceStream != null) {
                props.load(resourceStream);
                return props;
            }
        } catch (IOException ignore) {
        }
        return null;
    }

    @Nullable
    public static String getManifestEntry(@Nullable File jarFile, String manifestAttribute) {
        if (jarFile == null) {
            return null;
        }
        try (JarInputStream jarInputStream = new JarInputStream(PrivilegedActionUtils.newFileInputStream(jarFile))) {
            return jarInputStream.getManifest().getMainAttributes().getValue(manifestAttribute);
        } catch (IOException e) {
            return null;
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apm-agent-plugin-sdk/src/main/java/co/elastic/apm/agent/sdk/internal/util/VersionUtils.java [39:93]:
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    @Nullable
    public static String getVersion(Class<?> clazz, String groupId, String artifactId) {
        String version = versionsCache.get(clazz);
        if (version != null) {
            return version != UNKNOWN_VERSION ? version : null;
        }
        version = getVersionFromPomProperties(clazz, groupId, artifactId);
        if (version == null) {
            version = getVersionFromPackage(clazz);
        }
        versionsCache.put(clazz, version != null ? version : UNKNOWN_VERSION);
        return version;
    }

    @Nullable
    static String getVersionFromPackage(Class<?> clazz) {
        Package pkg = clazz.getPackage();
        if (pkg != null) {
            return pkg.getImplementationVersion();
        }
        return null;
    }

    @Nullable
    static String getVersionFromPomProperties(Class<?> clazz, String groupId, String artifactId) {
        final String classpathLocation = "/META-INF/maven/" + groupId + "/" + artifactId + "/pom.properties";
        final Properties pomProperties = getFromClasspath(classpathLocation, clazz);
        if (pomProperties != null) {
            return pomProperties.getProperty("version");
        }
        return null;
    }

    @Nullable
    private static Properties getFromClasspath(String classpathLocation, Class<?> clazz) {
        final Properties props = new Properties();
        try (InputStream resourceStream = clazz.getResourceAsStream(classpathLocation)) {
            if (resourceStream != null) {
                props.load(resourceStream);
                return props;
            }
        } catch (IOException ignore) {
        }
        return null;
    }

    @Nullable
    public static String getManifestEntry(@Nullable File jarFile, String manifestAttribute) {
        if (jarFile == null) {
            return null;
        }
        try (JarInputStream jarInputStream = new JarInputStream(PrivilegedActionUtils.newFileInputStream(jarFile))) {
            return jarInputStream.getManifest().getMainAttributes().getValue(manifestAttribute);
        } catch (IOException e) {
            return null;
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