Each tuple object has properties:
     members     [type: Array, elementType: dundas.data.HierarchyMember] - Gets the hierarchy and/or measure members.
     ordinal     [type: Number, integer: true]                           - Gets the tuple ordinal (index).
     properties  [type: Array, elementType: dundas.data.DataProperty]    - Gets the miscellaneous properties.
 
        The cellset must contain the data as returned by the server in response to the request and must not be modified in script.