revert method
Reverts changes to a GTM Variable in a GTM Workspace.
Request parameters:
path - GTM Variable's API relative path. Example:
accounts/{account_id}/containers/{container_id}/workspaces/{workspace_id}/variables/{variable_id}
Value must have pattern
^accounts/\[^/\]+/containers/\[^/\]+/workspaces/\[^/\]+/variables/\[^/\]+$.
fingerprint - When provided, this fingerprint must match the fingerprint
of the variable in storage.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a RevertVariableResponse.
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<RevertVariableResponse> revert(
  core.String path, {
  core.String? fingerprint,
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    if (fingerprint != null) 'fingerprint': [fingerprint],
    if ($fields != null) 'fields': [$fields],
  };
  final url_ = 'tagmanager/v2/' + core.Uri.encodeFull('$path') + ':revert';
  final response_ = await _requester.request(
    url_,
    'POST',
    queryParams: queryParams_,
  );
  return RevertVariableResponse.fromJson(
      response_ as core.Map<core.String, core.dynamic>);
}