delete method
Deletes an alias of a course.
This method returns the following error codes: * PERMISSION_DENIED if
the requesting user is not permitted to remove the alias or for access
errors. * NOT_FOUND if the alias does not exist. * FAILED_PRECONDITION
if the alias requested does not make sense for the requesting user or
course (for example, if a user not in a domain attempts to delete a
domain-scoped alias).
Request parameters:
courseId - Identifier of the course whose alias should be deleted. This
identifier can be either the Classroom-assigned identifier or an alias.
alias - Alias to delete. This may not be the Classroom-assigned
identifier.
$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 courseId,
  core.String alias, {
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    if ($fields != null) 'fields': [$fields],
  };
  final url_ =
      'v1/courses/' +
      commons.escapeVariable('$courseId') +
      '/aliases/' +
      commons.escapeVariable('$alias');
  final response_ = await _requester.request(
    url_,
    'DELETE',
    queryParams: queryParams_,
  );
  return Empty.fromJson(response_ as core.Map<core.String, core.dynamic>);
}