IPartPayload Interface

uuid(4d0455c7-7073-4c0d-a739-adcff6def5e6)

This interface provides standardized access to the attachment data.

Name	Description
Lock	Locks the attachment data, the attachment size shouldn't change once its been locked
Unlock	Unlocks the attachment data, once all the locks are removed, the attachment size can change.
Size	Returns the size of the attachment data in bytes.

Implement this interface if you are providing new types of attachment source.

The existing attachments serialization & deserialization code will call this interface as needed.