delete method
Deletes a negative keyword from a negative keyword list.
Request parameters:
advertiserId - Required. The ID of the DV360 advertiser to which the
parent negative keyword list belongs.
negativeKeywordListId - Required. The ID of the parent negative keyword
list to which the negative keyword belongs.
Value must have pattern ^\[^/\]+$.
keywordValue - Required. The keyword value of the negative keyword to
delete.
Value must have pattern ^\[^/\]+$.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a Empty.
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<Empty> delete(
  core.String advertiserId,
  core.String negativeKeywordListId,
  core.String keywordValue, {
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    if ($fields != null) 'fields': [$fields],
  };
  final url_ =
      'v4/advertisers/' +
      commons.escapeVariable('$advertiserId') +
      '/negativeKeywordLists/' +
      core.Uri.encodeFull('$negativeKeywordListId') +
      '/negativeKeywords/' +
      core.Uri.encodeFull('$keywordValue');
  final response_ = await _requester.request(
    url_,
    'DELETE',
    queryParams: queryParams_,
  );
  return Empty.fromJson(response_ as core.Map<core.String, core.dynamic>);
}