Gets the paragraph's list number text. The text consists of the text in front of the number, the number itself and the text behind the list number. It is an empty string, if the paragraph does not belong to a numbered list.
<void> Paragraph.getListNumberText(<RequestStringCallback> callback, [<ErrorCallback> errorCallback])
|callback||Receives the paragraph's list number text.|
||Optional. Is called when the operation failed with an error.|