Generating a CPG for a codebase and exporting in .dot format

How do I export a CPG for a codebase and export it in .dot format using Chen?

I am able to do generate a CPG using Joern with the following commands:
```
# Codebase in ./app, generates ./graph/export/export.dot
podman run --rm -it -v $(pwd)/app:/app -v $(pwd)/graph:/graph:rw ghcr.io/joernio/joern:nightly joern-parse -o /graph/cpg.bin /app
podman run --rm -it -v $(pwd)/app:/app -v $(pwd)/graph:/graph:rw ghcr.io/joernio/joern:nightly joern-export --repr all --format dot --out /graph/export /graph/cpg.bin
```

Is there an equivalent with Chen, ideally a simple Python API to do something similar?

Additional info:
I'm open to other formats than .dot as long as they're supported by the NetworkX python package.
I don't necessarily need the whole codebase, backward/forward CPG slices around a specific point in the codebase will work for me as well.

Thanks!