Activation activation = profile.getActivation();

        if (activation == null) {
            return false;
        }

        String jdk = activation.getJdk();

        if (jdk == null) {
            return false;
        }

        String version = context.getSystemProperties().get("java.version");

        if (version == null || version.isEmpty()) {

            } catch (InvalidVersionSpecificationException e) {
                throw new ProfileActivationException(
                        "Invalid JDK version in profile '" + profile.getId() + "': " + e.getMessage());
            }
        }

        boolean reverse = false;

        if (jdk.startsWith("!")) {
            reverse = true;
            jdk = jdk.substring(1);
        }

         * just one problem: Starting with JDK 7u51, the JDK TypeVariable's equals() method doesn't
         * recognize instances of our TypeVariable implementation. This is a problem because users
         * compare TypeVariables from the JDK against TypeVariables returned by TypeResolver. To
         * work with all JDK versions, TypeResolver must return the appropriate TypeVariable

                        fs.copy(copySpec -> {
                            // This is a work-around for https://bugs.openjdk.java.net/browse/JDK-8211194. Can be removed once that issue is fixed on JDK's side
                            // Since JDK 11, package-list is missing from javadoc output files and superseded by element-list file, but a lot of external tools still need it

import org.checkerframework.checker.nullness.qual.Nullable;

@GwtCompatible(emulated = true)
@ReflectionSupport(value = ReflectionSupport.Level.FULL)
@ElementTypesAreNonnullByDefault
// Some Android 5.0.x Samsung devices have bugs in JDK reflection APIs that cause
// getDeclaredField to throw a NoSuchFieldException when the field is definitely there.
// Since this class only needs CAS on one field, we can avoid this bug by extending AtomicReference

 *       {@code NullPointerTester} would need are not available) and in case of <a
 *       href="https://bugs.openjdk.java.net/browse/JDK-8202469">JDK-8202469</a>
 * </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after we're able to adopt the <a
 * href="https://jspecify.dev/">JSpecify</a> nullness annotations and <a

 *       {@code NullPointerTester} would need are not available) and in case of <a
 *       href="https://bugs.openjdk.java.net/browse/JDK-8202469">JDK-8202469</a>
 * </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after we're able to adopt the <a
 * href="https://jspecify.dev/">JSpecify</a> nullness annotations and <a

 *       {@code NullPointerTester} would need are not available) and in case of <a
 *       href="https://bugs.openjdk.java.net/browse/JDK-8202469">JDK-8202469</a>
 * </ul>
 *
 * <p>This annotation is a temporary hack. We will remove it after we're able to adopt the <a
 * href="https://jspecify.dev/">JSpecify</a> nullness annotations and <a

        }
    }

    /*
     * Prepare reflective access to ExtendedGSSContext. The reflective access
     * abstracts the access so far, that Oracle JDK, Open JDK and IBM JDK are
     * supported.
     * 
     * At the time of the first implementation only a test on Oracle JDK was
     * done.
     */

    private static final String OPENJDK_JGSS_INQUIRE_TYPE_CLASS = "com.sun.security.jgss.InquireType";

            activation.location("activeByDefault", toLocation(settingsActivation.getLocation("activeByDefault")));

            activation.jdk(settingsActivation.getJdk());
            activation.location("jdk", toLocation(settingsActivation.getLocation("jdk")));

            ActivationProperty settingsProp = settingsActivation.getProperty();
            if (settingsProp != null) {