execute method Null safety

List execute(
  1. List results,
  2. Map<String, dynamic> passed
)
override

Implementation

List execute(List results, Map<String, dynamic> passed) => results.length == 0
    ? []
    : results.length > 1
        ? throw _wrongLength('.abs()', results)
        : results.first is num
            ? results.first.abs().isNaN
                ? []
                : [(results.first as num).abs()]
            : results.first is FhirPathQuantity
                ? results.first.abs().isNaN
                    ? []
                    : [(results.first as FhirPathQuantity).abs().toString()]
                : throw _wrongTypes('.abs()', results, 'none');