Append log record to stderr
appender_console(lines)appender_stderr(lines)
character vector
This is a log_appender, for alternatives, see eg appender_stdout, appender_file, appender_tee, appender_slack, appender_pushbullet, appender_telegram, appender_syslog, appender_kinesis and appender_async for evaluate any log_appender function in a background process.