var mapOp = new UpdateMap.MapOperation();
mapOp.IncrementCounter("counter_1", 50)
    .AddToSet("set_1", "set_value_1")
    .SetRegister("register_1", "register_value_1")
    .SetFlag("flag_1", true)
    .Map("inner_map")
        .IncrementCounter("counter_1", 50)
        .AddToSet("set_2", "set_value_2");

var update = new UpdateMap.Builder(mapOp)
          .WithBucketType("maps")
          .WithBucket("myBucket")
          .WithKey("map_1")
          .WithReturnBody(true)
          .Build();