go mod resolution error

```
github.com/fullstorydev/grpcui/standalone imports
github.com/fullstorydev/grpcui imports
github.com/fullstorydev/grpcurl imports
google.golang.org/grpc/xds/experimental: module google.golang.org/grpc@latest (v1.33.0) found, but does not contain package google.golang.org/grpc/xds/experimental
```

Is this something that this package needs to resolve for users like myself to be able to build or is this on google?

Start by reproducing the reported build and checking the go.mod dependency resolution for google.golang.org/grpc. Trace why google.golang.org/grpc/xds/experimental is imported through grpcurl and compare the resolved module version with the package's requirements. Done means the standalone build resolves its dependencies successfully or the issue is clearly documented as an upstream grpc limitation.

Written by the indexing model from the issue text.