$formatter $formatter : string Type string — Format (conversion) specifications (e.g. for a timestamp).
$datatype_raw $datatype_raw : string Type string — type for raw data to use with a database log writer for mapping/abstraction layer purposes. Defaults to "string" if not set
$datatype_formatted $datatype_formatted : string Type string — type for formatted data to use with a database log writer for mapping/abstraction layer purposes. Defaults to "datatype_raw" if not set
$meta $meta : string Type string — If the field should be considered a format meta field, set to "true".
__construct() __construct(array $param) Parameters array $param Associative array to provide all attributes.