NameDescriptionTypeAdditional information
Count

Total count of all messages when no paging would be applied

integer

None.
Size

The number of messages returned in this list of Message
Normaly this the same number as Count when there is no paging applied.
But if there is paging applied, then Size is most of the time the same number as the requested ListSize, unless there are less Messages to show

integer

None.
MessageList

The list with messages

Collection of Message

None.