private static TypeSignature toTypeSignature(Parameter parameter) {
        final TypeSignature typeSignature = TypeSignature.ofBase(parameter.type().name());
        return parameter.isRepeated() ? TypeSignature.ofList(typeSignature) : typeSignature;
    }
{@link DocServicePlugin} implementation that supports {@link GrpcService}s.
grpc/src/main/java/com/linecorp/armeria/internal/server/grpc/GrpcDocServicePlugin.java