update method
Updates a Merchant Center account.
Any fields that are not provided are deleted from the resource.
request - The metadata request object.
Request parameters:
merchantId - The ID of the managing account. If this parameter is not
the same as accountId, then this account must be a multi-client account
and accountId must be the ID of a sub-account of this account.
accountId - The ID of the account.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a Account.
Completes with a commons.ApiRequestError if the API endpoint returned an error.
If the used http.Client completes with an error when making a REST call,
this method will complete with the same error.
Implementation
async.Future<Account> update(
  Account request,
  core.String merchantId,
  core.String accountId, {
  core.String? $fields,
}) async {
  final body_ = convert.json.encode(request);
  final queryParams_ = <core.String, core.List<core.String>>{
    if ($fields != null) 'fields': [$fields],
  };
  final url_ = commons.escapeVariable('$merchantId') +
      '/accounts/' +
      commons.escapeVariable('$accountId');
  final response_ = await _requester.request(
    url_,
    'PUT',
    body: body_,
    queryParams: queryParams_,
  );
  return Account.fromJson(response_ as core.Map<core.String, core.dynamic>);
}