derive method
Derive LuminousFluxUnits using this LuminousFluxUnits object as the base.
Implementation
@override
Units derive(String fullPrefix, String abbrevPrefix, double conv) => LuminousFluxUnits(
'$fullPrefix$name',
abbrev1 != null ? '$abbrevPrefix$abbrev1' : null,
abbrev2 != null ? '$abbrevPrefix$abbrev2' : null,
'$fullPrefix$singular',
valueSI * conv,
false,
offset);