@Override
    public String toString() {
        return stubFactoryName + '=' + getCause();
    }
A wrapper exception for propagating exceptions raised during the invocation of
{@link GrpcClientStubFactory#findServiceDescriptor(Class)} within Armeria's built-in factories.
Note that this class is for internal use thus it's not exposed to users.
grpc/src/main/java/com/linecorp/armeria/internal/client/grpc/ServiceDescriptorResolutionException.java