Messages are stored in the
messages workspace. Each user has its own subnode under the workspace root.
The numbered nodes (0, 1, 2 etc.) under the users are the messages. Their node type is
cleared. Whether the message has been read or not.
id. Identifies the message. The message ID is unique inside the user node.
message. Text of the message.
messageView. Message view definition name prefixed by the name of the module where the view is configured.
messageType. INFO, WORKITEM, WARNING or ERROR. Defined in MessageType.
sender. Name of the sending user.
subject. Subject line.
timestamp. Time when the message was sent.
workItemId. For workflow messages, an ID of the workitem.