copyWith method
Implementation
LevelState copyWith({
int? level,
int? linesCleared,
int? linesUntilNextLevel,
}) => LevelState(
level: level ?? this.level,
linesCleared: linesCleared ?? this.linesCleared,
linesUntilNextLevel: linesUntilNextLevel ?? this.linesUntilNextLevel,
);