The following is directly against best practices from Essential Go that call for no Get for accessors (although Set is used for mutators).
type Host interface {
// GetAddr returns the name or IP of the host.
GetAddr() string
// GetAuth returns the authorized_hosts format of the host.
GetAuth() []byte
// GetNetkey returns the RFC 4235, section 6.6 formatted public key of the host.
GetNetkey() ssh.PublicKey
// GetPubkey returns the public key suitable for ssh.FixedHostkey of the host.
GetPubkey() ssh.PublicKey
// GetComment returns the authorized_hosts comment of the host.
GetComment() string
// GetOptions returns the authorized_hosts options of the host.
GetOptions() []string
// GetClient returns the last (cached) client connection of the host.
GetClient() *ssh.Client
}