EntityProperty = function (value, type) {
        var entityProperty = { _:value};
        if (type) {
          entityProperty['$'] = type;
        }
        return entityProperty;
      }
A helper to create table entities.

@example
var entGen = TableUtilities.entityGenerator;
var entity = {  PartitionKey: entGen.String('part2'),
       RowKey: entGen.String('row1'),
       boolValue: entGen.Boolean(true),
       intValue: entGen.Int32(42),
       dateValue: entGen.DateTime(new Date(Date.UTC(2011, 10, 25))),
      };