@Override
    public boolean isActive(Profile profile, ProfileActivationContext context, ModelProblemCollector problems) {
        Activation activation = profile.getActivation();

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

        ActivationProperty property = activation.getProperty();

        if (property == null) {
            return false;

    void testIsActiveExistsLeavesFileUnchanged() {
        Profile profile = newExistsProfile("file.txt");
        assertEquals("file.txt", profile.getActivation().getFile().getExists());

        assertActivation(true, profile, context);

        assertEquals("file.txt", profile.getActivation().getFile().getExists());
    }

    private Profile newExistsProfile(String filePath) {
        ActivationFile activationFile =

    }

    @Override
    public boolean isActive(Profile profile, ProfileActivationContext context, ModelProblemCollector problems) {
        Activation activation = profile.getActivation();

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

        ActivationFile file = activation.getFile();

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

    @Override
    public boolean isActive(Profile profile, ProfileActivationContext context, ModelProblemCollector problems) {
        Activation activation = profile.getActivation();

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

        String jdk = activation.getJdk();

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

                }
            }
        }
        return isActive;
    }

    private boolean isActiveByDefault(Profile profile) {
        Activation activation = profile.getActivation();
        return activation != null && activation.isActiveByDefault();
    }

        return Optional.ofNullable(profile)
                .map(org.apache.maven.model.Profile::getDelegate)
                .map(Profile::getActivation)
                .map(Activation::getPackaging);
    }

                })
                .filter(p -> !isEmpty(p))
                .collect(Collectors.toList());
    }

    private static boolean isEmpty(Profile profile) {
        return profile.getActivation() == null
                && profile.getBuild() == null
                && profile.getDependencies().isEmpty()
                && (profile.getDependencyManagement() == null

                    + ") with new instance from source: " + profile.getSource());
        }

        profilesById.put(profile.getId(), profile);

        Activation activation = profile.getActivation();

        if (activation != null && activation.isActiveByDefault()) {
            activateAsDefault(profileId);
        }
    }

    /* (non-Javadoc)

                            "must be unique but found duplicate profile with id " + profile.getId(),
                            profile);
                }

                validate30RawProfileActivation(problems, profile.getActivation(), prefix);

                validate20RawDependencies(
                        problems, profile.getDependencies(), prefix, "dependencies.dependency.", request);