Constant GAMERULE_ALLOW_FIRE_TICKS_AWAY_FROM_PLAYER_DESCRIPTION 

pub const GAMERULE_ALLOW_FIRE_TICKS_AWAY_FROM_PLAYER_DESCRIPTION: &str = "gamerule.allowFireTicksAwayFromPlayer.description";

“Controls whether or not fire and lava should be able to tick further than 8 chunks away from any player”