startAttachmentUpload
inline suspend fun ConnectParticipantClient.startAttachmentUpload(crossinline block: StartAttachmentUploadRequest.Builder.() -> Unit): StartAttachmentUploadResponse
Provides a pre-signed Amazon S3 URL in response for uploading the file directly to S3.
ConnectionToken is used for invoking this API instead of ParticipantToken.
The Amazon Connect Participant Service APIs do not use Signature Version 4 authentication.