server_groups.go
func (c *Client) ServerGroup(identifier string) (*ServerGroup, error) {
	group := new(ServerGroup)
	_, err := c.MakeApiRequest("GET", "/1.0/server_groups/"+identifier, nil, group)
	if err != nil {
		return nil, err
	}
	return group, err
}
func (c *Client) ServerGroup(identifier string) (*ServerGroup, error) {
	group := new(ServerGroup)
	_, err := c.MakeApiRequest("GET", "/1.0/server_groups/"+identifier, nil, group)
	if err != nil {
		return nil, err
	}
	return group, err
}
// ServerGroup retrieves a detailed view on one server group