import ( "github.com/rackspace/rack/internal/github.com/rackspace/gophercloud/openstack/compute/v2/servers" "github.com/rackspace/rack/internal/github.com/rackspace/gophercloud" "github.com/rackspace/rack/internal/github.com/rackspace/gophercloud/pagination" ) // create a new ServiceClient using gophercloud client, err := openstack.NewComputeV2(provider, gophercloud.EndpointOpts{ Availability: gophercloud.AvailabilityPublic, }) // use ServiceClient to list servers servers.List(client, servers.ListOpts{}).EachPage(func(page pagination.Page) (bool, error) { serverList, err := servers.ExtractServers(page) if err != nil { return false, err } for _, server := range serverList { fmt.Println(server.Name) } return true, nil })In the above code example, a new ServiceClient is created using the openstack package from gophercloud. The example then uses the ServiceClient to list all servers, extracting each server's name and printing it to the console. The pagination package from gophercloud is used to iterate over pages of server results. Overall, the ServiceClient Request package is used to make HTTP requests to the Rackspace API using the gophercloud library. This package is essential for interacting with Rackspace, as well as other cloud providers.