taskqueue/taskqueue.go
func NewPOSTTask(path string, params url.Values) *Task {
	h := make(http.Header)
	h.Set("Content-Type", "application/x-www-form-urlencoded")
	return &Task{
		Path:    path,
		Payload: []byte(params.Encode()),
		Header:  h,
		Method:  "POST",
	}
}
func NewPOSTTask(path string, params url.Values) *Task {
	h := make(http.Header)
	h.Set("Content-Type", "application/x-www-form-urlencoded")
	return &Task{
		Path:    path,
		Payload: []byte(params.Encode()),
		Header:  h,
		Method:  "POST",
	}
}
// NewPOSTTask creates a Task that will POST to a path with the given form data.