code: func (i *ProviderInstaller) listProviderVersions(name string) (*response.TerraformProviderVersions, error) {
  	provider := regsrc.NewTerraformProvider(name, i.OS, i.Arch)
  	versions, err := i.registry.TerraformProviderVersions(provider)
  	return versions, err
  }
docs: // list all versions available for the named provider