startAttachmentUpload
abstract suspend fun startAttachmentUpload(input: StartAttachmentUploadRequest): StartAttachmentUploadResponse
Provides a pre-signed Amazon S3 URL in response for uploading the file directly to S3.
For security recommendations, see Amazon Connect Chat security best practices.
ConnectionToken is used for invoking this API instead of ParticipantToken.
The Amazon Connect Participant Service APIs do not use Signature Version 4 authentication.