Retrieves the specified query group. If no query group is specified, all query groups in the cluster are retrieved.
$params['name'] = (string) The name of the query group.
$params['pretty'] = (boolean) Whether to pretty-format the returned JSON response. (Default = false)
$params['human'] = (boolean) Whether to return human-readable values for statistics. (Default = false)
$params['error_trace'] = (boolean) Whether to include the stack trace of returned errors. (Default = false)
$params['source'] = (string) The URL-encoded request definition. Useful for libraries that do not accept a request body for non-POST requests.
$params['filter_path'] = (any) A comma-separated list of filters used to filter the response. Use wildcards to match any field or part of a field's name. To exclude fields, use -
.