toMap method Null safety
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
};