code: def create_content_addressed_github_uri(uri: URI) -> URI:
      
      if not is_valid_api_github_uri(uri):
          raise CannotHandleURI(f"{uri} does not conform to Github's API 'url' scheme.")
      response = requests.get(uri)
      response.raise_for_status()
      contents = json.loads(response.content)
      if contents["type"] != "file":
          raise CannotHandleURI(
              f"Expected url to point to a 'file' type, instead received {contents['type']}."
          )
      return contents["git_url"]
docs: Returns a content-addressed Github "git_url" that conforms to this scheme.
      https://api.github.com/repos/:owner/:repo/git/blobs/:file_sha
  
      Accepts Github-defined "url" that conforms to this scheme
      https://api.github.com/repos/:owner/:repo/contents/:path/:to/manifest.json