How to hide a component?

Is it possible to hide a component in the components menu?

For example, I have the following configuration:

sources:
  - url: ~/antora-doc
    start_path: antora-component
  - url: ~/antora-doc
    start_path: internal

The internal component contains the documentation for a limited number of users, so I want it to be available only via a direct link (e.g. output/internal/1.0/index.html) but not to be listed in the components menu in the sidebar.