Generates an AWS Signature Version 4 presigned PUT URL for B2's S3-compatible API.
B2 auth state, S3 credentials, target object, and signing options.
The presigned URL string.
Use presignS3PutObjectUrl; this alias is retained for pre-release callers that adopted the shorter name.
Generates an AWS Signature Version 4 presigned PUT URL for B2's S3-compatible API.