concatenate method

@override UnitConverter concatenate(UnitConverter converter)

Concatenates this converter with another converter.

The resulting converter is equivalent to first converting by the specified converter, and then converting by this converter.

Implementation

@override
UnitConverter concatenate(UnitConverter converter) {
  if (converter is AddConverter) {
    var offset = this.offset + converter.offset;
    return _valueOf(offset);
  } else {
    return super.concatenate(converter);
  }
}