Do executes the "drive.parents.get" call. Exactly one of *ParentReference or error will be non-nil. Any non-2xx status code is an error. Response headers are in either *ParentReference.ServerResponse.Header or (if a response was returned at all) in error.(*googleapi.Error).Header. Use googleapi.IsNotModified to check whether the returned error was because http.StatusNotModified was returned.

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	return c

// RevisionId sets the optional parameter "revisionId": Specifies the
// Revision ID that should be downloaded. Ignored unless alt=media is
// specified.
func (c *FilesWatchCall) RevisionId(revisionId string) *FilesWatchCall {
	c.urlParams_.Set("revisionId", revisionId)
	return c

// UpdateViewedDate sets the optional parameter "updateViewedDate":
// Deprecated: Use files.update with modifiedDateBehavior=noChange,
// updateViewedDate=true and an empty request body.
func (c *FilesWatchCall) UpdateViewedDate(updateViewedDate bool) *FilesWatchCall {
	c.urlParams_.Set("updateViewedDate", fmt.Sprint(updateViewedDate))
	return c

// Fields allows partial responses to be retrieved. See
// for more information.
func (c *FilesWatchCall) Fields(s ...googleapi.Field) *FilesWatchCall {
	c.urlParams_.Set("fields", googleapi.CombineFields(s))
	return c

// Context sets the context to be used in this call's Do and Download
// methods. Any pending HTTP request will be aborted if the provided
// context is canceled.
func (c *FilesWatchCall) Context(ctx context.Context) *FilesWatchCall {
	c.ctx_ = ctx
	return c

func (c *FilesWatchCall) doRequest(alt string) (*http.Response, error) {
	reqHeaders := make(http.Header)
	reqHeaders.Set("User-Agent", c.s.userAgent())
	var body io.Reader = nil
	body, err := googleapi.WithoutDataWrapper.JSONReader(
	if err != nil {
		return nil, err
	reqHeaders.Set("Content-Type", "application/json")
	c.urlParams_.Set("alt", alt)
	urls := googleapi.ResolveRelative(c.s.BasePath, "files/{fileId}/watch")
	urls += "?" + c.urlParams_.Encode()
	req, _ := http.NewRequest("POST", urls, body)
	req.Header = reqHeaders
	googleapi.Expand(req.URL, map[string]string{
		"fileId": c.fileId,
	return gensupport.SendRequest(c.ctx_, c.s.client, req)

// Download fetches the API endpoint's "media" value, instead of the normal
// API response value. If the returned error is nil, the Response is guaranteed to
// have a 2xx status code. Callers must close the Response.Body as usual.
func (c *FilesWatchCall) Download(opts ...googleapi.CallOption) (*http.Response, error) {
	gensupport.SetOptions(c.urlParams_, opts...)
	res, err := c.doRequest("media")
	if err != nil {
		return nil, err
	if err := googleapi.CheckMediaResponse(res); err != nil {
		return nil, err