function(listData, set)

Returns a promise that resolves to the list data for a particular set.

connection.updateListData( {
  data: [
      { id: 1, name: "dishes", createdAt: 1477104548997 }
  ]
}, {} ).then( function( listData ) {
  listData; //-> {
  //    data: [
  //      {id: 1, name: "dishes",
  //       createdAt: 1477104548997, updatedAt: 1477104580000}
  //    ]
  //}
} );