nullableRefer function Null safety

TypeReference nullableRefer(
  1. String symbol,
  2. {String? url,
  3. bool nullable = false}
)

Implementation

TypeReference nullableRefer(
  String symbol, {
  String? url,
  bool nullable = false,
}) =>
    TypeReference((b) => b
      ..symbol = symbol
      ..url = url
      ..isNullable = nullable);