Get File Metadata of Attachment

id	RM4
layer	Transport
facade	MessagesFacade
function	getAttachmentMetadata
description	Returns the attachment's metadata of the given 'attachmentId' of message with 'messageId'.
feature category	Bidirectional (un-)structured communication
tech category	Messages
status	DONE
actor	Identity
component	Runtime
priority	n/a
complexity	n/a
size	n/a
published	default