#vulnerable code 
                                @Override
    public void deploy(DeploymentPhaseContext phaseContext) throws DeploymentUnitProcessingException {
        final DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();

        KeycloakAdapterConfigService service = KeycloakAdapterConfigService.find(phaseContext.getServiceRegistry());
        if (service.isKeycloakDeployment(deploymentUnit.getName())) {
            addModules(deploymentUnit);
        }
    } 
                            #location 6 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                @Override
    public void deploy(DeploymentPhaseContext phaseContext) throws DeploymentUnitProcessingException {
        final DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();
        addModules(deploymentUnit);
    }