protected Map<String, ServerInterceptor> getServerInterceptorBeans() {
        return transformValues(this.applicationContext.getBeansWithAnnotation(GrpcGlobalServerInterceptor.class),
                ServerInterceptor.class::cast);
    }
Helper method used to get the {@link GrpcGlobalServerInterceptor} annotated {@link ServerInterceptor}s from the
application context.

@return A map containing the global interceptor beans.
grpc-server-spring-boot-starter/src/main/java/net/devh/boot/grpc/server/interceptor/AnnotationGlobalServerInterceptorConfigurer.java