client.go
func (c *Client) Cancel(id string) (*CancellationResponse, error) {
	cancelResp := &CancellationResponse{}
	resp, err := c.caller.Call("DELETE", c.endpoint+"/opengdpr_requests/"+id, nil)
	return cancelResp, c.json(resp, err, true, cancelResp)
}
func (c *Client) Cancel(id string) (*CancellationResponse, error) {
	cancelResp := &CancellationResponse{}
	resp, err := c.caller.Call("DELETE", c.endpoint+"/opengdpr_requests/"+id, nil)
	return cancelResp, c.json(resp, err, true, cancelResp)
}
// Cancel cancels an existing GDPR request.