RestDataProvider methods

Name	Description
getCards()	Retrieves a promise containing the cards data
getColumns()	Retrieves a promise containing the columns data
getLinks()	Retrieves a promise containing the links data
getRows()	Retrieves a promise containing the rows data
getUsers()	Retrieves a promise containing the users data
send()	This method handles sending the necessary HTTP requests to the server and returns a promise that may include data, depending on the request type.