toMap method Null safety

Map<String, dynamic> toMap()

Implementation

Map<String, dynamic> toMap() => {
      'policy': policy,
      'content-type': contentType,
      'x-amz-credential': xAmzCredential,
      'x-amz-algorithm': xAmzAlgorithm,
      'x-amz-date': xAmzDate,
      'x-amz-signature': xAmzSignature,
      'x-amz-object-lock-mode': xAmzObjectLockMode,
      'x-amz-object-lock-retain-until-date': xAmzObjectLockRetainUntilDate
    };