func (c *Client) Timeout(t time.Duration) *Client
func (c *Client) Cookie(m map[string]string) *Client
func (c *Client) Header(m map[string]string) *Client
func (c *Client) HeaderRaw(headers string) *Client
func (c *Client) ContentType(contentType string) *Client
func (c *Client) ContentJson() *Client
func (c *Client) ContentXml() *Client
func (c *Client) BasicAuth(user, pass string) *Client
func (c *Client) Retry(retryCount int, retryInterval time.Duration) *Client
func (c *Client) Prefix(prefix string) *Client
func (c *Client) Proxy(proxyURL string) *Client
func (c *Client) RedirectLimit(redirectLimit int) *Client
func (c *Client) Dump(dump ...bool) *Client
func (c *Client) Use(handlers ...HandlerFunc) *Client