serialize<T extends BorshObjectMixin>  method 
Encodes input using BorshObjectMixin.borshSchema.
Implementation
Iterable<int> serialize<T extends BorshObjectMixin>(
  final T input,
) {
  assert(
    _debugSerialize(input),
    'Keys found in `schema` do not match the keys found in `toJson()` for $input.',
  );
  return encode(input.borshSchema, input.toJson());
}