Optional. The amount of time to buffer log entries at the server before being returned to prevent out of order results due to late arriving log entries. Valid values are between 0-60000 milliseconds. Defaults to 2000 milliseconds.

Optional. A filter that chooses which log entries to return. For more information, see Logging query language (https://docs.cloud.google.com/logging/docs/view/logging-query-language).Only log entries that match the filter are returned. An empty filter matches all log entries in the resources listed in resource_names. Referencing a parent resource that is not listed in resource_names will cause the filter to return no results. The maximum length of a filter is 20,000 characters.