merge method

@override FlyLeadingToken merge(FlyToken<double> other)

Merge another token into this one (right side wins)

Implementation

@override
FlyLeadingToken merge(FlyToken<double> other) {
  if (other is! FlyLeadingToken) return this;

  return copyWith(
    tight: other.tight,
    snug: other.snug,
    normal: other.normal,
    relaxed: other.relaxed,
    loose: other.loose,
    extras: {...extras, ...other.extras},
  );
}