whenOrNull<TResult extends Object?> method Null safety

TResult? whenOrNull<TResult extends Object?>(
  1. {TResult? json(
    1. String id,
    2. String part,
    3. List<JsonSchema> schema,
    4. Map<String, dynamic> extra
    )?,
  2. TResult? zipJson(
    1. String id,
    2. String part,
    3. List<JsonSchema> schema,
    4. Map<String, dynamic> extra
    )?}
)
inherited

Implementation

@optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>({
  TResult? Function(String id, String part, List<JsonSchema> schema,
          @JsonExtra() Map<String, dynamic> extra)?
      json,
  TResult? Function(String id, String part, List<JsonSchema> schema,
          @JsonExtra() Map<String, dynamic> extra)?
      zipJson,
}) =>
    throw _privateConstructorUsedError;