repeatPeriod property
repeatPeriod Period after which the message will be sent again; in seconds; 0 if never; for Telegram Premium users only; may be non-zero only in sendMessage and forwardMessages with one message requests; must be one of 0, 86400, 7 * 86400, 14 * 86400, 30 * 86400, 91 * 86400, 182 * 86400, 365 * 86400, or additionally 60, or 300 in the Test DC
Implementation
final int repeatPeriod;