Decouple Mobile Service creating from MobileCore

public <T extends ServiceModule> T getInstance(final Class<T> serviceClass,
                    final ServiceConfiguration serviceConfiguration)
                    throws InitializationException {
        nonNull(serviceClass, "serviceClass");

        if (services.containsKey(serviceClass)) {
            return (T) services.get(serviceClass);
        }

        try {
            final ServiceModule serviceModule = serviceClass.newInstance();

            ServiceConfiguration serviceCfg = serviceConfiguration;

            if (serviceCfg == null) {
                serviceCfg = getServiceConfiguration(serviceModule.type());
            }

            if (serviceCfg == null && serviceModule.requiresConfiguration()) {
                throw new ConfigurationNotFoundException(
                                serviceModule.type() + " not found on " + this.configFileName);
            }

            serviceModule.configure(this, serviceCfg);

            services.put(serviceClass, serviceModule);

            return (T) serviceModule;

        } catch (IllegalAccessException | InstantiationException e) {
            throw new InitializationException(e.getMessage(), e);
        }
}