Interface VcsMappings

In settings.gradle:

vcsMappings {
  withModule("group:name") {
    from vcs(GitVcs) {
        url = "..."
    }
  }
  addRule("rule for group") { details ->
      if (details.requested.group == "group") {
          from vcs(GitVcs) {
              url = "..."
          }
      }
  }
}