server.go
func (c *Client) ListServers(dcid string) (*Servers, error) {
	url := serverColPath(dcid) + `?depth=` + c.client.depth + `&pretty=` + strconv.FormatBool(c.client.pretty)
	ret := &Servers{}
	err := c.client.Get(url, ret, http.StatusOK)
	return ret, err
}
func (c *Client) ListServers(dcid string) (*Servers, error) {
	url := serverColPath(dcid) + `?depth=` + c.client.depth + `&pretty=` + strconv.FormatBool(c.client.pretty)
	ret := &Servers{}
	err := c.client.Get(url, ret, http.StatusOK)
	return ret, err
}
// ListServers returns a server struct collection