code: func (m *Module) Host() *FriendlyHost {
  	if m.RawHost == nil {
  		return PublicRegistryHost
  	}
  	return m.RawHost
  }
docs: // Host returns the FriendlyHost object describing which registry this module is
  // in. If the original source string had not host component this will return the
  // PublicRegistryHost.