string_cy_validation_async# async static EdgarHelpers.string_cy_validation_async(period)[source]# Helper method to asynchronously validate if a string is in ‘CY####’ or ‘CY####Q#’ format. Parameters: period (str) – The reporting period string to validate. Returns: True if the string is in ‘CY####’ or ‘CY####Q#’ format, False otherwise. Return type: bool